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Pathria Statistical Mechanics persian solution

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  • 8/21/2019 Pathria Statistical Mechanics persian solution

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    -(

    ),()()(

    1EE oo-

    .1E

    1E1E

    .

    (

    A1A1E 2

    .

    :

    ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( )( )

    ( ) ( )( ) ( ) ( )

    ( )

    ( )

    , ,

    ,

    E E E E E E E E E

    E E E E E

    = = =

    =

    1 2 1 1 2 2 1 1 2 1 1

    1 1 1 2 1

    o o oo

    o o o

    :

    ( )( )

    ( )( ) ( )( ) ( ) ,( , )E E

    d E EdP EP E C E E

    dE dE =

    = = =11

    1 1

    1 1

    1 1

    o o

    o oo o

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    ( )P E1 E1.

    1

    o:

    ( ) ( ) ( ) ( )

    ( ) ( )

    lnln ln

    ln

    E E

    E E

    EE E E E

    E

    EE E

    E

    =

    =

    = +

    + +

    !

    1 1

    1 1 1 1 1 1

    11 1

    22

    1 1

    1 12

    11 1

    1000

    2

    ( ) ( ) ( ) ( )

    ( )

    ( )

    lnln ln

    ln

    E E

    E E

    EE E E E

    E

    E

    E EE

    =

    =

    = +

    + +!

    2 2

    2 2 2 2 2 2

    22 2

    22

    2 1

    2 222

    2 2

    1000

    2

    ( ) ( ) ( ) ( )ln lnE E

    E E E E E EE

    =

    = + + +

    !

    21

    1 1 1 1 1 1 1 1 1

    11 1

    1000

    2

    ( ) ( ) ( ) ( )ln lnE E

    E E

    E E E E E EE

    ==

    = + + +

    !

    22

    2 2 2 2 2 2 2 2 22 2

    22 2

    1000

    2

    :

    ( )( ) ( ),E E E E E E = = = + = +1 2 1 2 1 2o o

    ( )E E E E = 22 1 1

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    .

    ( ) ( ) ( ) ( )

    ( ) ( ) ( ) ( )( ) ( )

    ln ln ...

    ln ln

    E E

    E E

    E E E E E EE

    E E E E E E E EE

    =

    =

    = + + +

    !

    = + + !

    2

    1 1 1 1 1 1 1 1

    11 1

    2

    2 1 2 1 1 1 1 12

    2 2

    1

    2

    1000

    2

    o o

    ( ) ( ) ( ) ( )

    ( )

    ( ) ( )ln ln ln lnE E E E E E

    E EE E

    + = +

    + + +

    1 1 2 1 1 1 2 1

    2

    1 1

    1 2

    1000

    2

    o o

    ( ) ( ) ( ) ( ) ( )( ) ( )ln lnE E E E E E E E = + 2

    1 1 2 1 1 1 2 1 1 1

    1

    2

    o o

    ( ) ( ) ( )( ) ( ) ( ) ( )ln , ln ,E E E E E E = + 2

    1 1 1 1

    1

    2

    o o o o

    ( )( )

    ( )( ) ( )

    ( ) ( )

    ,exp

    ,

    E EE E

    E E

    =

    21

    1 1

    1

    1

    2

    o o

    o o

    E E

    = + = +

    1 21 2

    :

    ( )

    Tk T

    E E k T E

    = = = < < 1 2

    1 1

    1

    1 1

    o o o

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    ( )( )

    ( ) ( ) ( )( ) ( )

    ( ) ( )

    ,ex p

    ,

    E EE EE E P E Ce

    E E

    = =

    1 22 1 121

    1 1 1

    1

    1

    2

    o o

    o o

    :C

    ( ) ( )

    ( ) ( )( )

    E E

    E E

    P E dE Ce dE

    C C

    P E e

    + +

    = =

    = =

    =

    21

    12

    1 1 1

    21

    12

    1

    1 1

    21

    2

    2

    o

    o

    .e

    1

    :

    ( ) ( )

    ( ) ( )ln

    ,E EE E

    E E E

    E

    EE

    ==

    = =

    = + = =

    12 2

    21 1 1

    212

    21 1 2 2

    11 2

    2

    2

    )

    NE N k T

    = =

    3 3

    2 2

    ( )

    = +1

    21 2

    2

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    .

    ( )( )

    N

    E E

    N N

    E E E E

    = =

    = = =

    1

    1 2

    1 1

    2 2

    2 2 2

    2 2 1

    3

    2

    3 3

    2 2 o

    ( )( )( )

    N N

    E E E

    = + = +

    1

    21

    1 22

    1 2 2 2

    1 1

    3 32 2

    2 2 o

    -S =)( fS

    .

    )(f.)--(

    :

    ( ) ( )tot i i ii i

    S f S S f = = =

    ( )

    ( ) ( ) ( )

    t ot i i i iii i

    f f

    f f f

    = =

    = + +

    1 2 1 1 2 2000 000

    fdf d

    d d d

    =

    = + +

    1 2

    1 2

    000

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    fdf d

    d df fd

    = +

    = + = + +

    1

    1

    1 2

    1

    1 1 2

    000

    000 000

    )(

    ( ) ( ) ( ) f f

    f f f df d d

    = + + = + +

    1 2

    1 1 2 2 1 2

    1 2

    000 000

    )(

    ( ) ( ), f ff

    cte

    = = = =

    1 2

    1 2

    1 2

    1 2 000

    ( ) lnd

    df C f k

    = =

    -,B A.

    ,B A

    V V

    A

    A

    dE

    dN

    A B B A

    B A

    T T

    T T

    ,T

    .

    :

    A BS S S + o o

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    .

    ( ), , S S S

    S S E V N dS dE dV dN E V N

    V Const dV

    = = + +

    = = o

    S SdS dE dN

    E N

    = +

    , ,

    , ,

    A AA B A A

    A AN V E V

    B BB B

    B BN V E V

    S SS S dE dN

    E N

    S SdE dN

    E N

    + = +

    + +

    dE TdS PdV dN = +

    ,V N

    S

    E T

    =

    1

    )(

    ,E V

    S

    N T

    =

    )(

    A B A B A BN N N Const dN dN dN dN+ = = + = = o

    )(

    A B A B A BE E E Const dE dE dE dE+ = = + = = o

    )(

    :

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    A BA B A A B B

    A A B B

    S S dE dN dE dN T T T T

    + = +

    1 1

    A BA A A A

    A B A B

    dE dE dN dN

    T T T T

    = +

    1 1

    B AA A

    A B B A

    dE dN T T T T

    = +

    1 1o

    mi n

    A B A A B A B A A B

    A B A A B A

    dE T T dE T T

    dN T T dN T T

    =

    )(-

    N

    )( oVNV )( 1+N

    .

    oV

    3.VNV

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    .

    ( )NN

    N uu uV

    V V V

    121 1 00000 1

    . . .NN

    u uCV

    V V

    =

    21 1

    .C

    ( )

    ln ln ln ln ln

    ln ln ln

    ln! !

    N

    N

    m

    u uC N V

    V V

    m uC N V

    V

    x xx x

    =

    = + + + +

    = + +

    =

    1

    1

    2 3

    21 1 000

    1

    1 00002 3

    ( )

    ln ln ln

    ln ln

    N

    m

    uS k k C N k V k m

    V

    N N uk C N k V k

    V

    == = +

    = +

    1

    1

    1

    2

    ( ) ( ),N E

    k N N u N uP S N k N k T V V V V V

    = = + = + 2

    1 1122

    uV

    .

    ( )N uPV N k T

    V

    = +

    11

    2

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    V

    V

    u

    .

    :

    u V

    = = =

    3

    34 48 8

    3 3 2 o

    Vo

    2

    .

    ( )N VPV N k T

    V

    = +

    8 11

    2

    o

    N VN PV N k T

    V

    >> +

    41 1 o

    -/1o3oo

    .

    41o

    :

    /

    L mP atm

    E J

    R m T c

    = = =

    = =

    4

    11

    11

    32

    oo

    oo

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    .

    / ,

    / /

    EJPV N k T N k P PV E K V

    N k T E N k T E

    T T K

    = = = =

    = =

    = =42

    2 2265

    3 3

    2 2

    3 3

    21 265 28 5

    3

    o

    o

    o o

    -

    ) , , ) ( )x y z x y z

    hcE n n n n n n

    L= + +

    12 2 2 2

    2.

    -)--(

    V

    P

    C

    C

    3

    4

    3

    5.

    :

    ( , , ) ( , , )x y z x y z

    hcE n n n n n n

    L=

    1

    2

    2

    ( , , )

    ( , , )

    ( , , )

    x y z

    x y z

    NN x N y N z

    En n n L

    hc

    En n n L

    hc

    En n n L

    hc

    =

    = =

    1

    2 2 2 121 1 1

    1

    2 2 2 22

    1 1 1

    1

    2 2 2 2

    2

    2

    2

    M

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    ( ) ( )x y z N x N y N z

    N

    L En n n n N N

    hc

    E E E E E

    + + + + + + =

    = + + + +

    1 12 2 2 2 2 22 2

    1 1 1

    1 2 3

    2000

    000

    .

    L E

    hc

    2.

    x y

    L E L En n

    hc hc= =

    1 1

    2 2

    N

    N N

    L ES C

    hc

    = =

    3 12

    :

    lnS k=

    ln ( ) lnN

    L ES k C k N

    hc= +

    23 1

    ( )ln , ln = =2

    3N

    L ES k N k C

    hc

    .N N3 1 3

    exp ,

    hc S

    E L VL k N

    = =

    1

    3

    2 3

    ,

    exp expN V

    hc S E hc S E T

    N k S N k L N kV

    ET E N k T

    N k

    = = =

    = =

    1

    3

    1

    3 3 2 32

    33

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    .

    ( )

    ,

    ,

    ,

    VN V

    p

    N T

    EE N k T C N k

    T

    E E EC E PV P PV

    T V V

    = = =

    = + = = =

    3 3

    3 3

    v

    ( ) p

    p

    CEC E k N N k

    T C

    = + = = = =

    4 43 4

    3 3 3

    -

    (n) nh n , , , = = 1 2o

    .N

    Eh

    Nh

    E.

    :

    :

    ( ) , , ,.. .n n h n = =1 1 1

    1 2o

    :

    ( ) , , ,. . .n n h n = =2 2 2 1 2o

    :

    ( ) , , ,. . .n n h n = =3 3 3

    1 2o

    M

    N

    :

    ( ) , , ,. . .N N N

    n n h n = = 1 2o

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    EN

    )E)N

    ( ) ( ) ( ) ( )N N

    E n n n n n n n n h R h = + + + = + + + =1 2 1 2

    000 000

    ER

    h=

    Rh.

    R

    RN

    :

    [ ]( )!

    ln ln( )! ln ! ln( )!!( )!

    N RS k k N R R N

    R N

    + = = = +

    1

    1 11

    N>>1N N1.

    [ ]

    ,

    ( ) ln( ) ln ln

    lnN V

    S k N R R N R R N N

    S S R k R N

    T E R E h R

    = + +

    + = = =

    1

    ln

    hT

    N hk

    E

    =

    +

    1

    1

    E

    N h

    N h

    E

    o

    ln ( )N h

    E

    + 1 o: T

    -),,( EVNS

    :

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    .

    , , ,

    + + = V E N E N V

    S S SN V E S

    N V E

    S

    T

    )EPVN(=

    ++

    N E PV TS = +

    .

    :

    .

    ( ) ( )( ) , , , ,

    N N

    V V S S S N V E S N V E

    E E

    = =

    , , ,V E N E N V

    S S SdS dN dV dE

    N V E

    = + +

    ( ) ( ),dS S S S dN N = = = 1 1

    ( ) ( )dV V dE E = = 1 1

    ( ) ( ) ( ) ( )S S S

    S N V E N V E

    = + +

    1 1 1 1

    , , ,V E E N N V

    S S SN V E S

    N V E

    + + =

    PN V E S PV E T S N

    T T T

    + + = + =

    1

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    -

    k3. o o

    :, , / ,m V N T k

    E N k T

    = = = =

    23

    2 2 2 2

    2 2 2

    4 6 2 1 3

    3

    2

    oo o o oo

    :

    , , /m V N

    S S

    E N k T

    = =

    = =

    23

    1 1 1

    1 2

    1 1 1

    4 6 2 1

    3

    2

    o o

    :

    ln lnV m E V m E

    N k N k N k N kh N h N

    + = +

    1 1

    2 21 1 1 2 2 2

    1 1 2 23 3

    1 2

    4 43 3

    3 2 3 2

    :

    ,N N V V m E m E m N k T m N k T= = = = 1 2 1 2 1 1 2 2 1 1 1 2 2 2

    3 3

    2 2

    m T m T T T k = = =1 1 2 2 1 14 4 3 3 oo oo ooo

    -3 o o

    .

    :

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    .

    .

    , ( )n R T n R T nR T

    V V V n n nP P P

    = + = + = +1 21 2 1 2

    ln ln ,iT i i i i

    i i

    N NV n T

    S N R N k N n N V h N N

    =

    = = + + = =

    2 1

    21

    2

    43 2

    12

    o

    o

    o

    // /

    /

    nR T V V V

    P N N

    = = = =

    15

    5 3

    23

    1 2

    1 23 11 23 1 5 1 1

    4 4 6 2 1

    oo o

    o o

    , ?N m m= =1 2

    14o

    ( )

    ( )

    /

    /

    /

    / /

    m T

    h

    V V

    N Nm T

    h

    =

    = = =

    3

    1

    2234

    3

    32

    2

    2234

    2 2 3 14 14 3 1

    6 63 1

    4 2 4 1

    2 16 3 1

    2 3 14 1 55 1

    o

    oo o

    o

    o o

    oo o

    o o

    -

    )-(.

    ,)( , ,2 2 1 1

    V N V N ( ) o 21S

    N N

    V V=1 2

    1 2

    )(. , , ,V N V N 2 2 1 1

    ( ) ( ) ( ) o= SSS N2N121.

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    )( )( 21 NN +

    ( ) ( ) 221

    lnkNNS + =N N1 2

    .

    :

    ( ) ( ) ln ln ln

    ( ) ln ln ln ln ln

    V V V V S k N N N N

    N N N N

    V Vk N N N N N N N V N V

    N N

    + = +

    +

    += + + +

    +

    1 2 1 2

    1 2 1 2 1 2

    1 2 1 2

    1 2

    1 2 1 1 2 2 1 1 2 2

    1 2

    ( ) ln ln

    ,

    V V N V V N S k N N

    N N V N N V

    N NnV m V N nN

    V m V

    + + = +

    + +

    = = =

    1 2 1 1 2 2

    1 2 1 2

    1 2 1 1 2 2

    2 1

    2 1 2 1

    2 1

    :n m

    ( )( ) ln ln

    ( )

    m V N m nS k N N

    n N V n m

    + + = + + +

    1 1

    1 2 1 2

    1 1

    1 1

    1 1

    ( ) ( ) ln m n

    S k N N k N lnn m

    +

    = + ++1 2 1 2 2

    1

    1

    )

    ( ) ( ) ln lnN N N N

    S S S k N N N

    + + = = +

    1 2 1 2

    1 2 2

    1 1

    o

    .

    ( ) ln lnN N N N

    S k N N N N

    + + = +

    1 2 1 2

    1 2

    1 2

    :)

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    .

    ln ln ( ) lnN N

    N N N NN N

    + +1 2 1 2

    1 2

    2

    ln ln lnN NN N

    N N N N+ 1 2

    1 2

    2

    N m N=1

    .

    :

    ( )m N N N N m N = + = 1 1 2 2 1

    1

    ( )ln ln ln

    ln ln ln( ) ln ln

    m mm

    m m m

    mm m m

    m m m m

    +

    + +

    1 12

    1

    1 1 11 2

    1

    ln( ) ( ) ln

    ( ) ( ) ln

    m

    m

    mm

    m

    mm

    m

    1

    1

    1 21

    1 21

    ( )

    mm

    m

    m

    m 1

    21

    =m .2

    m k=

    .

    k+1

    .

    ( )

    ( ) ( )

    k kk k

    k k

    k k

    k k

    ++

    +

    1

    1

    1

    12 2

    1

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    :

    TS.

    ln ln : ,i ii i i i

    m k TS N k V N k i

    h

    = + + =

    2

    3 21 1 2

    2

    ln ln iT i i

    i

    m k TS N k V N k

    h

    =

    = + +

    2

    21

    231

    2

    ln ln ln

    ln ln ln

    ln ln

    m k TS N k V N k V N k N k N k

    h

    m k TN k N k V N k V N k N k

    h

    m k T m k T N k N k

    h h

    = + + + +

    + + + +

    + +

    1

    1 2 1 2 1 2

    2

    2 1 1 2 2 1 22

    1 1 2 2

    1 22 2

    23 3 3

    2 2 2

    23 3 3

    2 2 2

    2 23 3

    2 2

    :

    ln ln ln lnV V V V T T

    S k N N N k N k V V T T

    = + + +

    1 2 1 2

    1 2 1 2

    1 2 1 2

    3 3

    2 2

    .

    P V N k T

    PV N k T

    P V N k T

    =

    = =

    1 1 1 1

    2 2 2 2

    ( )TS S S S = +1 2

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    .

    ,

    P V P V PV N k T N k T N k T

    N T N TT N N N

    N

    + = + =

    += = +

    1 1 2 2 1 1 2 2

    1 1 2 2

    1 2

    -

    3

    5

    ( )PS( )VS 3 o o4o o

    .

    :

    d Q

    dS dT= d Q PdV du

    S T T

    +

    = =

    P

    du nC d T =.

    .du nR dT =5

    2

    du nR dT =3

    2

    ( )

    ( )PP

    VV

    S nC

    S nC

    = =

    5

    3

    ( )

    ( )

    ln

    ln

    tf fV VV ti

    i

    tf fp PP ti

    i

    Tdu dT S nC nC T T T

    Tdu dT S nC nC

    T T T

    = = =

    = = =

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    ( )

    ( )

    ln ln

    ln ln

    P

    V

    S R R

    S R R

    = =

    = =

    5 4 5 41

    2 3 2 3

    3 4 3 41

    2 3 2 3

    oo

    oo

    oo

    o

    -P V

    constPV =

    .

    1

    f2

    f, 2 1

    f f= +

    1 2

    1 1

    1

    1 1 1.

    :

    d Q= o ' , ,dS PV cte f f = = + =1 2 1o

    12n

    1)(

    n2

    )(

    ' t t t t f f f f

    V Vt t t t i i i i

    n R T n R T dT dT S n C dV n C dV

    T V T V = + + + = 1 1 2 21 11 1

    1 2

    o

    ( ) ( )ln lnf fV Vi i

    BA

    dQ u PdV S T T

    T Vn C n C n R n R

    T V

    + = =

    + + + =

    1 2 1 21 2o

    14424431442443

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    .

    ln ln ln

    B A

    f f

    i i

    V T

    V T

    + =

    1

    B A

    B A B Af f

    f f i ii i

    V T

    V T V T V T

    = = 1

    n R n RA B

    B A nC n CV Vf i i i

    i f f f

    T V V V

    T V V V

    + + = = =

    11 2

    21 2

    , ,V T cte PV cte PV N k T = = =1

    V V

    V V

    nC n C n R n RnC n C n R n R

    ++ = =+ +

    21 2 1 2

    1

    2 1 1 21 2

    111

    V V V V

    P V P V

    C C C C n nf f

    n n n nR R C C C C

    f f

    = + = +

    + + + +1 1 2 2 1 2

    1 21 2 1 2

    1 1 2 1

    1 2

    1

    1

    P P

    V V

    f f f f

    C C

    C C

    = + = +

    1 2 1 2

    1 21 2

    1 2

    1 11 1

    - ST

    PV =

    NV

    PV

    T

    =

    .

    :

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    G E T S PV N

    dE T dS S dT PdV V dP dN N d

    = + =

    + + = +

    dE T dS PdV dN V dP S dT N d = + = + )(

    dPPT.

    T

    P PdP dT d

    T

    = +

    )(

    )(

    V

    )(

    .

    T

    P PV dT V d S dT N d

    T

    + = +

    T

    PS V

    T

    PN V

    =

    =

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    - :

    ( )N

    i ii

    d dq dp=

    = 3

    1

    ( , )q p

    ) , )Q p.

    :(

    .

    iQ

    i

    q

    .

    :

    .

    ) , )i i

    q p:

    ,i i

    i i

    H Hq p

    p q

    = =

    & &

    )(

    ) , )i i

    q p

    ) , )i i

    Q P )(

  • 8/21/2019 Pathria Statistical Mechanics persian solution

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    ) , )i i

    Q P

    .

    i i i ii j j

    j j j j i j

    Q Q Q H Q H Q q p

    q p q p p q

    = + =

    & & &

    .

    ( , )

    ( , )

    j j

    j j

    q q Q P

    p p Q P

    =

    =

    :

    ,

    j j

    i j i j j

    j ji ii

    i j i i i

    p qH H H

    P p P q P

    p qH Q Q

    Q P q P p P

    = +

    = = =

    &

    i

    p&i

    H

    Q

    :

    ,j ji i

    j i j i

    P qP P

    q Q p Q

    = =

    .

    , ,i i i m i

    q p i m += = 3 3

    ,i i ii m

    H H H H

    q p +

    = = 3

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    .

    N

    NN

    Hq

    qq

    q

    p

    Hp

    p

    =

    1

    1

    2

    3

    1

    3

    3

    1

    1

    1

    1

    1

    1

    1

    1

    &

    & o o oo

    o o o oo

    o o o oo

    & o o oo

    o o oo

    o o o oo

    o o o oo

    o o o o

    J

    N N6 6.

    ,N

    N

    HJ J

    = =

    3

    3

    1

    1

    o

    o

    N NJ

    = = =

    2

    6 6

    1 1 1

    1 1 1

    o o o

    o o o

    11

    J J

    J J J

    = =

    = = 1

    1 1

    1 1

    o o%

    o o

    %

    11

    det ( )J= 1.

    ( )

    ( )

    , ,... , `

    , ,. .. ,

    ,. . . , , ,. . . ,

    ,. . . , , ,. . . ,

    i N N N

    i N N N

    q q p p

    Q Q P P

    =

    =

    = =

    1 2 6 1 3 1 3

    1 1 6 1 3 1 3

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    ( ) , , ,. . . ,

    = = =

    1 6& &i i i i j

    i

    i j N

    M.

    M =& &

    ( ), , ,,i i

    i j i j i jj j

    M M M

    = = =

    %

    ,

    ,

    j

    i j i

    H H HM J

    H H HM M J M

    = =

    = =

    &

    %&%

    :

    M J M J=%

    . . . . . .

    . . . . . .

    N

    N N ii

    N

    N N ii

    d dq dq dp dp d

    d dQ dQ dP dP d

    =

    =

    = =

    = =

    6

    1 3 1 31

    61

    1 3 1 31

    :=M

    detd M d =1

    M JM J=%:

    ( )det det detM J J=2

    det detM M = =1 1

    .

    :

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    .

    :

    ,q Q q Q 2 2 1 1

    ( )

    ( )

    i i

    i i

    q q Q

    Q Q q

    =

    =

    &

    ( ), ,ji i ij i

    PqP P p

    p Q

    = = =

    o o

    det

    i i

    N N j j

    i i i ji i

    i i

    j j

    q q

    Q Pdq dp dQ dP

    p p

    Q P

    = =

    =

    3 3

    1 1

    Ni i

    j ji j j

    q pd Q d P

    Q P=

    =

    3

    1

    :

    j i

    i j

    p q

    P Q

    =

    i

    j i

    j

    q

    Q p

    P

    =

    1

    N Ni

    i i j ji i j i

    j

    qdq dp dQ dP

    Q q

    Q

    = =

    =

    3 3

    1 1

    1

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    N N

    i i j ji j

    dq dp dQ dP= =

    = 3 3

    1 1

    -

    .h

    .

    :

    IELI

    LE

    I

    LH 2

    22

    22

    ===

    h

    =

    =

    o

    o

    .

    IE

    IEdld dl d IE

    = = =

    2

    2 4 2

    IE

    IE

    8

    24 22

    h

    ho

    =

    =

    = ()

    :

    ( )l lLEI I

    += =22

    1

    2 2

    h )(

    :)()(

    ( )l l

    + =2

    14

    h =o

    .

    .

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    .

    ( ) ( )l l ll

    E E l l l lI I

    = = + = 2 2

    1 1 1

    2

    h h

    :

    ( )

    I

    llE

    I

    LH

    2

    1

    2

    22h+

    ==

    E H E

    +2 2

    .

    LE E

    I

    I E L I E

    +

    +

    2

    2

    2 2 2

    2 22 2

    ( )L

    L dl d L L I E I E

    = = = +

    2 2 11

    2 2 2 22 2

    / /

    IE EE E

    = +

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    -

    )M )

    M 2

    h

    .

    ( )jM j j= +1 h , , ,. . .1 3 5

    2 2 2

    , , ,. . .j= 1 2o

    :.

    += 2

    2

    22

    sin

    PPM.

    :

    .

    sin ,r

    V V V V r r r r

    = + + = + + =2 2 2 2 2 2 2 2 2 2&& & & o

    M L I= =

    sin

    ppV r M L I I

    I I

    = = = = +

    222 2 2 2 2 2 2 2

    2 2 2

    sin sin

    p ppM p

    M M

    = + + =

    2 222 2

    2 2 2 2 1

    .

    p

    p

    :.

    ( )sin

    H I L

    H I

    = =

    = +

    2

    2 2 2

    1

    2

    1

    2

    & &

  • 8/21/2019 Pathria Statistical Mechanics persian solution

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    .

    pLp I

    I

    = = =

    & &

    &

    sinsin

    pLp I

    I

    = = =

    2

    2& &

    &

    sin

    ppH I

    I I

    = +

    22

    2 2 2

    1

    2

    :

    d d dp dph

    = 2

    2

    1

    o o

    ( )sindp dp M M = .

    ( )sin M

    M M d Mh h

    = = =

    22 2 2

    2 2

    2 22

    o h

    ( )jM j j= +1 h

    j

    j+2 1

    .

    ( ) . . . . . . .j M

    j M

    A j M=

    == + = + + + 2 1 1 2

    -

    &ml2

    A.

    E

    T

    .

    :

    T m gl = 2 21

    2

    &

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    ( cos )V m gh m gl m gl = = =

  • 8/21/2019 Pathria Statistical Mechanics persian solution

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    .

    --

    NE .

    .

    nE n n , , ,

    = + =

    11 2

    2h o

    -

    .

    o

    N

    h.

    :

    :

    ( )h2111

    /+= nE :

    ( )h2122 /+= nE

    N

    :

    ( )/N NE n = +1 2 h

    ( )

    ( )

    N N

    N

    NE E E E n n n

    E Nn n n

    + + + = = + + + +

    + ++ =

    1 2 1 2

    1 2

    2

    2

    h h

    h

    E NR

    =

    2h

    Rh.

    R

    N

    )

    (

    .

    :

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    ( )( )

    !

    ! !

    R N

    R N

    + =

    1

    1

    E

    N>> hR>>N.

    ( )

    ( )

    !

    !

    N

    N

    R

    N

    E

    ER

    N

    =

    =

    1

    1

    1

    1

    h

    h

    N-

    .

    . . . . . . .

    N Nn n

    d q d p E E

    E H E

    = +

    :

    NNE N N E N

    E E

    + + =

    12 21 1

    2 2

    = h

    :

    = o

    ( ) !

    NN

    N

    E N

    E

    N

    =

    1

    1

    2

    1

    1

    o

    h

    h

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    .

    ( ) ( )! !N N NN N N h = =1 2

    o h

    !N.

    -.

    . . . ( .. . )N

    N

    ii

    dx dx dx

    x R=

    1 2 3

    3

    1

    o

    pc=N3 .

    E

    Nh = 3

    o

    -

    -

    .

    :

    n nn n n nV C R dV nC R dR

    = = 1

    xe dx = 1o

    n

    . . . . .

    nx ni Ri

    ii

    e dx e dV

    == =

    1

    1 1

    ,n

    i iii

    x R dx dV=

    = = 1

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    ( )R n R nn n ne nC R dR nC e R dR nC n = = = 1 1 1 1

    ( ) !nC

    n n n= =

    1 1

    !

    n

    n

    RV

    n=

    .N3

    ( )!

    N

    N

    RV

    N=

    3

    33

    Rhypershell )(.

    ( ) !

    N

    N

    RS

    N

    =

    3 1

    33 1

    E

    N3

    :

    ( ) !

    NR

    N

    =

    3 1

    3 1

    ER

    pc.pc=

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    -()--( ))--)--(.

    ) )--()--(

    .)--()--(

    :

    (

    lnr r

    rr

    n

    =

    = 1

    )--

    (

    { }{ }

    { }{ }

    '

    '

    r rn r

    r r r

    r r rn

    r

    n W n

    nW n

    = =

    2

    2 1 )--

    (

    ( ) lnr r r r r r

    r r r

    n n n

    = =

    2

    2 2 2 1

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    r rr r

    r r

    = +

    2

    2

    2

    r rr

    r r r

    = +

    22

    2 2

    1

    rrr

    r

    r r

    r rr

    r r r r

    = +

    = +

    2

    2 2

    )

    ln

    rr r r

    r r r r

    = =

    )-

    -(

    ,lnr r

    r r all s

    =

    = 1

    :)--(

    ( )

    ( ),

    exp

    exp

    r r rr

    r rr all s

    E E

    UE

    =

    =

    1

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    .

    ( )( )

    ( )

    ( ),,

    expexp

    exp exp

    r r rr r r

    r r r r r r r rs all s

    E EE EU

    E E

    = =

    = =

    2

    1 1

    o

    ( ) ( )

    ( )

    ( )

    ( ),

    ,

    exp exp exp

    expexp

    r r r r r rr r

    rr rrr r all s

    r all s

    E E E E

    EE

    ==

    +

    2

    2

    1

    1

    ( ),,

    (*)r rr r

    r rU all sall s

    n nE E U U

    ==

    + =

    2 2

    11

    o

    , =

    =

    2 2

    1

    r r

    r rall s

    E U n

    E U

    .)--(

    ( )( )

    ( )( )

    ( )

    ( )

    ( ) ( )

    ( )

    exp exp

    exp exp

    exp expexp

    exp exp

    r r r r rr

    r r r r r Ur r

    r r r r r r r r

    r Ur r r r

    r r

    E E En

    E E

    E E EE

    E E

    =

    +

    2

    2 2

    ( )

    ( )

    exp

    exp

    r r rr

    r

    r r r Ur

    E E

    UE

    + +

  • 8/21/2019 Pathria Statistical Mechanics persian solution

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    ( )

    ( )

    exp

    exp

    r r rr

    r

    r r r Ur

    E E

    UE

    + +

    ( )

    ( )

    ( )

    ( )

    ( ) ( )

    ( )

    expexp

    exp exp

    exp exp

    exp

    r r rr rr

    rr r r r Ur r

    r r rr

    r r

    r

    E EE E

    E E

    E E

    E

    + +

    +

    2

    2

    ( )

    ( ),

    exp

    exp

    r r rr

    r

    r r r r r U Ur

    all s

    E EU

    E

    =

    +

    2

    1

    ( )r r r r r

    r

    r rU U

    n n n n nE U

    = +

    22

    r rr r

    r r r r U U U U

    n nE E U U

    + +

    2

    2 2

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    .

    r rr r

    r r rU U U

    n nE U E U

    = +

    2 2

    r r r r r

    r rU U

    n n n n

    E U

    + +

    2

    ((a*[...].

    ( ),

    ( )r r r r

    r

    r U all s

    n n n nU E

    =

    = +

    22

    1

    ( )( )

    ( )

    ( )

    rr r rr

    r

    rr r r

    r

    U En n nU EE U

    U En n n

    U E

    = +

    = +

    2 2

    2

    2

    1

    1

    )--

    (

    ( )r r r r U E E U E U E U = + = 2 2 2 2 2

    2

    - )( oxg )--(

    ( ) )exp(UE .22

    )--(

    .)--(

    :

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    ( ) ( )

    ( )f x U U

    g xf x x

    2

    2

    o

    o

    o o

    )--

    (

    ( ) ( )

    E Er r

    r r rr rf z z f z E z

    = =

    1

    ( ) ( ) Err r rr

    f z E E z = 21

    ( )( ) Err r r

    rEr

    rr

    E E xU U

    g xxx

    =

    22

    2

    1o

    o

    oo

    &( )expx = o

    ( ) ( ) ( )Er

    r r rr

    Err

    r

    E E e U Ug x

    ee

    =

    2

    2

    2

    1o

    ( )E Er r

    r r rrr rE Er r

    r rr r

    E e e E e e

    e U Ue e

    =

    2 2 2

    2 2

    ( )e E E U U e E U + = 2 2 2 2 2 2

    e E U U e E U U E = + = +

    2 22 2 2 2 22 2

    ( )re E EU U e E U + =

    22 2 2 22

    E U=

    .

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    .

    -

    (N,V,T)A:

    , ,

    + =

    V T N T

    A AN V A

    N V

    ]

    GPVAN +=.[

    :

    ( ) ( ), , ln ,NA N V T k T Q V T=

    T

    .

    , ,V T N T

    A AdA dN dV

    N V

    = +

    , ,V T N T

    A AdA dN dV

    N V

    = +

    , ,V T N T

    A AA N V A N PV N A PV G

    N V

    = + = = +

    ,N T

    AP

    V

    =

    :

    ,V T

    A

    N

    =

    :

    :

    ,( ) ,. . .x x1 2n

    :

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    ii i

    fx nf

    x

    =

    A:

    ( ) ( ), , , ,A N V T A N V T =

    A.

    :

    , , ,V T N T V T

    A A AN A

    N V T

    + + =

    T C onst =.

    , ,V T N T

    A AA N

    N V

    = +

    -

    (

    .)--(

    .)

    )E(

    )exp )r r

    P E .

    .E)

    )E(

    )

    N(

    )exp ) r r r

    p N E ,

    .,EN

    :

    )

  • 8/21/2019 Pathria Statistical Mechanics persian solution

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    .

    lnr r

    SP P

    k= )--

    (

    :

    ( )

    ln

    ln ln

    r r

    rr r r r r

    r rr

    S k P P

    PS k P P P k P P

    P

    =

    = + = + =

    1 o

    rP

    r

    P

    rP 1

    .

    r rr r

    P P= = 1 o

    (ln )r r r

    r r

    S k P P P

    = == + = 1

    o o

    o

    :

    ( ) ( )ln lnr r r r r r r r

    P P P P P

    = = =+ + = + + = 1 1

    o o o

    o o

    ( ) ( ) ( )ln ,r r r r r r

    P P e P e P

    + +

    = == + = = = =

    1 1

    11 1 1

    o o

    (

    ,r r r r r r r

    r

    E P E E P E P P = = = = 1o o

    ( )ln

    r r

    r r r r r

    P P

    P P P E P

    = =

    + + + =

    1

    o o

    o

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    ( ) ( )ln lnr r r r r P E P P E + + + = = + 1 1o

    ( ) E Er rr r

    P e e P e + = 1

    :)

    r rP P = = 1 o

    r r r r E E P E P = = o

    r r r r N N P N P = = o

    ( )ln r r r r P E N P + + + + = 1 o

    ( ) N E N E r r r r r rP e e P e

    +

    =

    1

    -:

    T VP V

    T

    ln QT

    T VC C k

    ln Q

    V

    = >

    2

    2

    2

    o

    Nk

    .

    :

    , ,

    ,V P

    V N V P N P

    d Q S d Q S C T C T

    dT T dT T

    = = = =

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    .

    V T

    P V T P

    S SdS dT dV

    T V

    S S S V T T T

    T T V T

    = +

    = +

    P VT P

    S VC C T

    V T

    =

    :

    T V

    S P

    V T

    =

    P V

    V p

    P VC C T

    T T

    =

    ,( ) ,x y z = o:

    y x z

    z y x

    x z y

    = 1

    P VV p

    P VC C T

    T T

    =

    2

    , ,ln , ln

    N T N T

    PP k T Q k T QV V V

    = =

    2

    2

    P T V

    V V P

    T P T

    =

    P VV T T V T

    V P P V PC C T T

    P T V P T

    = =

    2 2 2

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    V T V T

    P P P PT T

    T V T V

    = =

    2 1 2 1

    ln

    lnln

    Pk T QT V

    T VT

    Qkk T Q

    V V

    = =

    22

    2 2

    2 2

    1

    :

    ln

    lnP V

    Qk T

    T VC C

    Q

    V

    = >

    2

    2

    2

    o

    ( )!

    N

    NVQ m k T

    N h =

    3

    23

    1 2

    ( )ln ln ! ln ln ln lnNQ N N V h m k T = + + +

    3 3 32

    2 2

    ln ln,N N

    Q QN NT

    V V V V

    = =

    ln ln,N N

    Q QN NT

    T V V V V = =

    2

    2 2

    P V

    Nk

    VC C k N N

    V

    = = >

    2

    2

    o

    -:

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    .

    ln lnP

    QST Q

    N k N T

    = + 1

    1

    :

    ( , ) , ln

    !

    N

    N NQ Q N T A k T Q

    N

    = = 11

    ( )

    ( )

    ,

    ln ,

    ln ln !

    NN V V

    N

    V

    AS k T Q V T

    T T

    k T Q N T

    = =

    = 1

    ( )ln ln lnV V

    Qk T N Q N N N N k T T T T N

    = + = + 1

    1

    ln ln ln lnVV

    Q Q QST T Q

    N k N T N N T

    = + + = + + 1 1 1

    11 1

    ln ln ln

    ln ln ln

    pp V T

    pV p T

    Q Q Q V

    T T V T

    Q Q Q V

    T T V T

    = +

    =

    1 1 1

    1 1 1

    ln !ln ln ln ! ln

    N

    A NA k T Q k T N Q k T N N Q

    N k T N

    = = + = +

    1 1

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    ln ln !

    TT

    Q A N P

    V N k T V V N N k T V

    = + = = 1

    1 1

    P

    V N kPV N k T

    T P

    = =

    ln ln ln

    V P P

    Q Q QN k TT T T

    T T PV T

    = = 1 1 1 1

    lnln

    P

    Q QST

    N k N T

    = + 1 1

    -)

    (

    i

    f

    P

    P

    .

    :

    )

    ln ( )

    V m k T

    S N k N h

    = +

    3

    2

    2

    2 5

    2

    f id Q T dS d Q S S = = =o

    ln ( ) ln ( )i i f f V m k T V m k T

    N k N kN h N h

    + = +

    3 3

    2 2

    2 2

    2 5 2 5

    2 2

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    .

    ( ) ( )i i f f i i i f f f

    V T V T V P V V P T = =3 3 3 3

    2 2 2 2

    ). )PV N k T =.

    i i f f P V P V =

    5 5

    3 3

    PV const

    :=

    =5

    3

    ( ) ( )f i if i

    i f i

    P V VV V

    P V V

    = = = =

    5 5 5

    3 3 32 22

    )

    f i

    dQ dQdQ T dS S S S

    T T= = =

    ln ( ) ln

    ( ) ( ) exp

    f f f f

    i i i i

    f f

    i i

    V T V P dQN k N k

    TV T V P

    V P dQ

    V P N k T

    = =

    =

    3 5 3

    2 2 2

    3 5 3

    2 2 2

    5 3

    2 2 1

    ( ) exp( ) ( )f i f

    i f i

    P V dQ P

    P V N k T P=

    53

    2

    3

    ( )f

    i

    P

    P

    dQ= o)(.

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    -V:

    { ( )}/

    ==

    3

    1

    NU u qN

    i

    i N Ti

    V e d q

    U

    ( )iu q

    .

    +

    =2

    52 23

    2

    /

    h

    mkT

    N

    VlnNkS

    V*

    .

    :

    ( )N

    iim

    i

    PH u q U

    == +

    23

    1 2

    !

    exp ( )!

    NH

    N i iNi

    iiN

    i

    Q e d P d qN h

    PU q U

    N h m

    ==

    = +

    3 3

    31

    2

    3

    1

    1

    2

    N N

    i ii i

    d P d q= =

    3 31 1

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    .

    ( )

    ! !

    !

    NPN Ni PNm m k Ti

    N iN Ni

    NN

    N

    V VQ e d P e P dP

    N h N h

    V m k TN h

    =

    = =

    =

    22

    3 22 2

    3 31

    3

    23

    4

    2

    ,

    ln ln

    ln

    N

    N V

    V m k T A k T Q k T N

    N h

    A V m k TS N k

    T N h

    = =

    = = +

    3

    2

    2

    3

    2

    2

    21

    2 5

    2

    -

    N1

    m1

    N2

    m2

    TV

    .

    21 NN +

    m

    221121 NmNmNNm +=+ )(.

    :

    )

    ( ), ,N N

    H

    NQ V T e d q d P N N N = + =

    3 3

    1 2

    N Ni i

    i i

    P PH

    m m= == +

    2 21 2

    1 11 2

    2 2

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    ( )/

    !

    N

    N

    VQ m k T

    N h

    =

    13 2

    1311

    12

    ( )/

    !

    N

    N

    VQ m k T

    N h

    =

    23 2

    232

    2

    12

    ( )( ) ( )/ /

    ! !

    N NN N

    tot N N N N

    VQ Q Q m k T m k T

    N N h

    +

    += =

    1 23 2 3 21 2

    1 231 2 1 21 2

    12 2

    ( ) ( )/ /

    ! !

    NN N

    tot N

    VQ Q m k T m k T

    h N N = =

    3 2 3 21 2

    1 23

    1 2

    2 2

    ln ln ln

    ln ln

    N

    A k T Q N k T V N k T h

    k T N N k T N k T N N k T N

    = = +

    + + 1 1 1 2 2 2

    3

    ( ) ( )ln lnN N

    k T m k T k T m k T 1 21 2

    3 32 2

    2 2

    ( ) ( )

    ln ln ln ln

    ln ln

    k T N V N k T h k T N N k T N k T N N

    N Nk T m k T k T m k T

    = + + +

    1 1 2 2

    1 21 2

    3

    3 32 22 2

    ,N T

    A k T NP

    V V

    = =

    ( )P V N k T P V N N k T = = +1 2

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    .

    ( ) ( )

    ,

    ln ln ln

    ln ln

    N V

    AS N k h N k N k N k N N

    T

    N N N Nk m k T k T k m k T k T

    T T

    = = + +

    1 1 2 2

    1 1 2 2

    1 2

    3

    3 3 3 31 12 2

    2 2 2 2

    ( ) ( )

    ln ln ln

    ln ln

    S N k h N k N N k N k N

    N NN k N k k m k T k m k T

    = + +

    + + +

    1 1 2 2

    1 2

    1 2 1 2

    3

    3 33 32 2

    2 2 2 2

    ln ln ln ln

    ln( ) ln( )

    U A T S k T N V N k T h N k T N k T N N k T N

    N k T m k T N k T m k T

    = + = + + +

    +

    1 1 2 2

    1 1 2 2

    3

    3 32 22 2

    ln ln ln

    ln( ) ln( ) ( )

    T N k h N k N N k N k N N k N k

    N k m k T N k m k T N N k

    U N k T

    + + + +

    + + = +

    =

    1 1 2 2 1 2

    1 1 2 2 1 2

    3 33

    2 2

    3 3 32 2

    2 2 2

    32

    (

    ( )( )

    ( ),!

    N N

    N N

    VQ V T mkT

    N N h

    +

    +

    = +

    1 23

    231 2

    1 2

    12

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    ( ) ( ) ( ) ( ), , ln , ln lnNV

    A N V T kT Q V T kT N N kT mk Th

    = = +

    3

    21 2 3

    2

    ( ) ( ) ( ) ( ),

    ln ! lnN V

    A VS k N N N N k mkT N N k

    T h

    = = + + + + +

    3

    21 2 1 2 1 23

    32

    2

    ( ) ( ),N T

    A kTP N N PV N N kT

    V V

    = = + = + 1 2 1 2

    ( ) ( ) ( ) ( )ln ln V

    A kT N N N N N N N N kT mk Th

    N N N

    = + + +

    + =

    3

    21 2 1 2 1 2 1 2 3

    1 2

    2

    ( ) ( ),

    ln lnV T

    A VkT N N kT mkT

    N h

    = = +

    3

    21 2 3

    2

    ( ) ( ),N V

    AU T N N kT U N N kT

    T T T

    = = + = + 2 2

    1 2 1 2

    3 3

    2 2

    PT

    U

    T

    ( )N N+1 2

    .

    ( ) ( ) ( )

    ( ) ( ) ( )

    ,

    ln ln

    ln

    N V

    AS k N V k N N N N k N N

    T

    k N N m k T k T N N T

    = = + + + +

    + + + +

    1 2 1 2 1 2

    1 2 1 2

    3 3 12

    2 2

    ( ) ( ) ( )ln lnS k N V k N N N N k N N = + + + +1 2 1 2 1 2

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    .

    ( ) ( ) ( )lnk N N m k T k N N + + + +1 2 1 23 3

    22 2

    ( ) ( )

    ( ) ( ) ( ) [

    ln ln

    ln ln

    U A S T k T N V kT N N N N

    k T N N k T N N m k T T k N V

    = + = + +

    + + +

    1 2 1 2

    1 2 1 2

    32

    2

    ( ) ( ) ( ) ( ) ( )

    ( )

    ln lnk N N N N k N N k N N m k T

    k T N N

    + + + + + + +

    + +

    1 2 1 2 1 2 1 2

    1 2

    32

    2

    3

    2

    ( )U k T N N U N k = + =1 23 32 2

    ,V P

    .( )N N+1 2.,S A

    -),( TVQN

    N

    pc=c.

    N

    N

    kTQ (V,T) V

    N! hc

    =

    31

    8

    :

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    VPV U , kT

    N= = =

    1 43

    3 3

    )--(

    )(Eg

    .

    :

    ( ) ( ), ,!

    c P NN ii

    i N i iNi i

    H cp Q V T e d q d PN h

    = == = 3 33

    1 1

    1

    o

    ( ),! !

    N NN NcP pc

    N N N

    V VQ V T e P dP e P dP

    N h N h

    = =

    2 2

    3 34 4

    o o

    ( ) ( )

    ( )

    cP cP cd de P dP e dP ecd c d c

    d

    c cd c

    = =

    = =

    2 2

    2

    2 2

    2

    2 3 3

    1

    1 2

    o o

    o

    ( ),! !

    NNN

    N N

    V k T k T Q V T V

    N h c N hc

    = =

    33 3

    3 3

    18 8

    ( )

    ln ln ! ln

    ln ln

    N

    k TA k T Q k T N k T N V

    hc

    k Tk T N N N N k T V

    hc

    = =

    =

    3

    3

    8

    8

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    .

    ,

    ln ! lnN V

    A k TS k N N k V N k

    T hc

    = = + +

    3

    8 3

    , ln lnV T

    A k T

    k T N k T V N hc

    = =

    3

    8

    ,N V

    AU T T k N N k T U N k T

    T T T

    = = = = 2 2 3

    3 3

    ,

    ,V

    N T V

    A UP k T N PV N k T U C N k

    V V T

    = = = = = =

    1 13

    3

    ( )P

    P

    P

    V

    E PVC U U N k T N k

    T T T

    C

    C

    + = = + = =

    = =

    1 43 4

    3 3

    4

    3

    -

    N3

    :

    N

    N

    kTQ (L,T) L

    ( N)! hc

    =

    3

    3

    12

    3

    L

    .

    :

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    N3

    .

    N

    ii

    H cP=

    = 3

    1

    ( ) ( )

    ( )

    , !

    !

    Nc P Ni

    i

    N i iN i

    NL cp

    N

    Q V T e dq dPN h

    dq e dPN h

    =

    =

    =

    =

    33

    1

    3 3 1

    3

    3

    1

    3

    1

    3 o

    ( ) ( ) ( )

    ( )

    ! !

    !

    NN NNcP cP

    N N

    NN

    N

    L Le dP e

    N h N h c

    L k TN h c

    = =

    =

    3

    3 33

    3 3

    33

    3

    22

    3 3

    23

    o o

    ( )( )

    ,!

    N

    N

    k TQ V T L

    N ch

    =

    3

    3

    12

    3

    ( )ln ln lnNk T

    A k T Q k T N N N N k T Lch

    = = 3 3 3 3 2

    ( ),

    ln ! lnN V

    A k TS k N N k L N k

    T ch

    = = + + 3 3 2 3

    ( ),

    ln lnV T

    A k Tk T N k T L

    N ch

    = = 3 3 2

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    .

    ,N V

    AU T N k T N k T

    T T T

    = = = 2 2 1

    3 3

    ,N T

    A N k TP PV N k T U

    V V

    = = = =

    33

    -)--(( , )f p q[ ]U H(p,q)

    f = o:

    [ ] o= d))q,p(Hexp()q,p(HU

    )--(

    .

    :( ) ( )

    ( ), exp

    exp

    f q p H df

    H d

    =

    )-

    -(

    f U H f U H= = = o

    ( ) ( ), expU H q p H d = o

    ( ) vU U

    E E E k T k T CT

    = = = =

    22 2 2 2 )-

    -(

    :

    E E

    E E

    E e d Ee dE E

    e d e d

    =

    22

    22

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    E E E

    E E E

    Ee d E e d Ee dUU

    e d e d e d

    = = +

    22

    ( )

    UE

    =

    2

    ( ) ( )H HU H e d U H e d

    = = o o

    ( )H H HU H

    e d e d U H H e d

    HH H

    H H H

    Ue d

    UHe d H e d e d e d e d

    + =

    2

    o

    U UUH H U H H

    + = + =

    2 2

    o

    UE E

    =

    22

    -:

    vv

    v

    ( ) = +

    3 2 4 32

    CE k T T C

    T

    :

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    .

    ( ) , = =

    3

    2

    2

    2 8

    3 9

    E E

    U N U N

    :

    ( ) ( )E E E E E E E E E

    E E E E

    = = +

    = +

    2 33 3 3 2

    33 2

    3 3

    3 2

    E E E

    E E E

    Ee dE E e d Ee dUU

    e dE e d e d

    = = +

    2

    U U =

    2

    2

    ( )

    E E E

    EE

    E E E E

    E E E E

    E e d E e d Ee dU

    e d e d

    Ee d E e d Ee d Ee d

    e d e d e d e d

    =

    +

    3 22

    22

    22

    2 2

    E E E E E E E= + 2 2 23

    2 2

    ( )U

    E E E E E

    = + =

    233 2 3

    2 3 2

    :

    Tk T

    T k T k T T

    = = = =

    2

    2

    1 1

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    k T k T k T k T k T T T T T

    = =

    2 2

    2 2 2 2

    2 22

    k T k T TT

    = +

    2

    2 4 2 3

    2 2

    ( )VV

    VV

    U U UE k T k T

    T T

    Ck T T C

    T

    = = +

    = +

    2 23 2 4 2 3

    2 2

    2 4 3

    2

    2

    VV

    UC T

    =

    :

    VV

    UU N k T C N k

    T

    = = =

    3 3

    2 2

    ( )

    ( )

    VE k T C N k T

    N k TE E

    U U NN k T

    = =

    = = =

    2 2 2 2

    2 22 2

    22

    3

    2

    3

    22

    33

    2

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    .

    ( ) V

    V

    CE k T T N k N k T

    T

    E N k T N k T

    U N k T N N T

    = + =

    = = =

    3 2 4 3 3 3

    3 3 3 3 3

    3 3 3 2

    32 3

    2

    3 3 8 8

    27 93

    2

    - ((long time averagedG

    dt

    i i

    i

    G p q= )--(

    .)--(

    :

    i iG q p=

    [ ],dG G

    G Hdt t

    = +

    [ ],dG G

    G Hdt t

    = +

    GG

    t

    =

    o

    ( )long timeaverage

    :

    [ ], i ii i ii i i i i i

    G H G H H H G H p q

    q p p q p p

    = = =

    o o

    i ii ii i

    H Hif p N K T q N K T

    p p

    = =

    3 3

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    -

    ( )U r ( )U r

    )n(

    :

    nUPV+= 3

    :K

    ( ) ( )nEPV)n(

    nUPVK ++

    =+== 32

    13

    2

    1

    2

    1

    U

    UKE .=+

    .

    :

    ( ) n nU

    U r A r nA r r

    = =

    1

    ( )i ii

    pH U r

    m

    = +

    2

    2

    ( ) = = +

    & ii i i i ii i i i

    U rq F q p q

    r

    = = 13 3n ni i ii i

    N K T nr A r N K T n A r

    .

    ni

    i

    U A r=

    :

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    .

    = 3N K T nU

    :

    = = =

    3 2ii i

    Hq N K T K

    q

    K

    .

    = 1

    2K

    ( ) ( )( )

    ( )( )

    = = + = +

    = ++

    1 1 13 3

    2 2 2

    13

    2

    K pV nU pV n E K

    K pV nE n

    -(

    ) )n= +2.

    )) )n= 1)()(

    .

    (

    .

    :

    ,p

    K K m qm

    = =2

    2 21

    2 2

    sin( )q A t=

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    cos( )p m A t=

    cosTm A m A

    K t dt m T m

    = =

    2 2 2 2 2 221

    2 4o

    K m A= 2 214

    sin ( )T

    U m A t dt m AT

    = =2 2 2 2 21 1 1

    2 4o

    ( )K pV nU = +1

    32

    pV m A m A pV + = =

    2 2 2 21 1 13 2

    2 4 4

    o

    =p o.

    -

    .

    :

    F k x

    U k x

    =

    =

    3

    41

    4

    :

    pH m x k x k x

    m= + = +

    22 4 41 1 1

    2 4 2 4&

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    .

    ( )ii i

    HK x x k x k x U

    x

    = = = = =

    3 41 1 1 1

    22 2 2 2

    -s:

    ( ) , , ,. . .i

    sE j j= + = 1 2

    2h o

    j

    ( )!

    !( )!

    j s

    j s

    +

    1

    1.

    N

    .

    sN.

    :

    s s

    r rr r

    sE n n

    = =

    = + = +

    1 1

    1

    2 2h h

    :

    s

    rr

    n j=

    =1

    s

    s

    nr j .

    .

    ,...,; .. .

    j n n ss

    s sE j E n n

    = + = + + +

    112 2h h

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    x y z

    n n n j+ + = , ,x y z

    n n n

    j

    s'

    j

    s1 's

    .

    ( )( )

    ( )( )

    '! !

    ! ! ! !

    j s j sj s j s

    j j s j j sj j

    + + + + = = = +

    11 1

    1 1

    :

    ( )'

    j

    j s sg E E j

    j

    =

    + = +

    1

    2oh

    ( )( )

    !

    ! !

    s

    j

    j

    j se e

    j s

    =

    + =

    2

    1

    1

    hh

    o

    ( ) ( )

    ( )( )

    ,

    !

    ! !

    sj

    E

    ij

    s

    j

    j

    Q s e g E dE g e

    j se e

    j s

    +

    =

    =

    = =

    + =

    2

    1

    2 1

    1

    h

    oo

    hh

    o

    ( ) ( ),s

    Q s e e

    = 2

    1 1

    h

    h

    ( )( )

    e

    es

    Q

    =

    1

    2

    1

    1

    h

    h

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    .

    ( )e esN N s

    NQ sN

    = =

    1

    2 12

    hh h

    ( )

    ( )

    ln ln e

    ln e

    NA k T Q k T sN k T N s

    sN sN k T

    = = +

    = +

    11

    2

    12

    h

    h

    h

    h

    ( ),

    lnV T

    A ssk T e

    N

    = = +

    12

    hh

    ( ) ( )( )

    ,

    ,

    ln

    N T

    N T

    AP

    N

    A k eS sN k e sN k T

    T e

    = =

    = = + 1

    1

    h

    h

    h

    o

    h

    ( )( )

    ln e

    S sN k e sN k e

    =

    1

    1

    h

    h

    hh

    sN

    .

    ( )( )

    exp

    exp

    =

    1

    1

    2

    1

    h

    hQ

    )--

    (

    ( )( )

    exp

    expsN sN

    sN

    Q

    =

    2

    1

    h

    h

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    N

    s sN

    .

    - ln ( )g EN

    ))--)--(

    :

    ( ) ln( ) ( ) ln( )S E E E E

    N k N N N N = + +

    1 1 1 1

    2 2 2 2h h h h

    .:

    :

    { }N

    N

    NQ e e

    = 2 1h

    h

    ( ) ( )'

    '

    'i

    E

    i

    g E e Q d i

    +

    = >

    1

    2o

    ( ) { }'

    '

    Ni NE

    i

    g E e e e d A

    i

    +

    = = 21

    1

    2

    hh

    ( )

    EN

    N

    EN

    N

    E

    Ng E

    E

    N

    +

    + =

    1

    2

    1

    2

    1

    2

    1

    2

    h

    h

    h

    h

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    .

    ln lnS E E E E

    N k N N N N

    = + +

    1 1 1 1

    2 2 2 2h h h h

    -(NE

    n

    P

    n.)))--(

    nn

    p

    == 1

    o

    N)

    E

    ):)exp .))--

    .>>E1>>N

    :

    , , ,. . .

    , , ,. . .

    E n n

    E n n

    = + =

    = + =

    1 1 1

    2 2 2

    11 2

    2

    11 2

    2

    h o

    h o

    . . . . ..N

    NE E E E n n n n

    NR

    = + + + = + + + + +

    = +

    1 2 1 1 2 32

    2

    h

    hh

    ( )ln lnS k g E k A= =

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    Rn .h

    n

    E n = +

    1

    2h

    N1'E

    .

    ' ,N N

    n i ii i

    N NE E E E n n R

    = =

    = = + = + = +

    1 1

    1

    2 2 2

    h hh h h

    ( ) ( )'E R N n R n N = + = + 1 1 1

    12 2 2

    h h h h h h

    NE

    :( )

    ( )!

    ! !

    R N

    R N

    + =

    1

    1

    )(

    N1'E:

    )( :

    ,R R n N N 1

    ( ) ( )( ) ( )

    !'

    ! !

    R n N

    R n N

    + =

    1 1

    1 1

    ( )( ) ( )

    ( )( )

    !

    ! !'

    !

    ! !

    n

    R n N

    R n NP

    R N

    R N

    +

    = = +

    2

    2

    1

    1

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    .

    ( ) ( )( ) ( ) ( )

    ( ) ( ) ( )( ) ( ) ( )

    ( ) ( ) ( ) ( )

    ( ) ( )

    ! ! ! ! ! ! !

    ! ! ! ! ! !

    ... ! !

    ! !

    n

    R N R n N R N N R n NP

    R N R n N R N R n N

    R R R n R n N N

    R N R n

    + + = =

    +

    + =

    +

    1 2 1 2 2

    1 2 1 2

    1 2 1

    1

    ( ) ( ) ( )( )( )( ) ( ) ( )( )( )

    . . . . . . !

    ... . . . .

    R R R n R N n N

    R N R N R N n R N

    + =

    + + + +

    1 1 1 1 1

    1 1 1 1 1 1 1 1

    ( ) ( ) ( )( ) ( )

    . . . . . .

    . . . . . .

    R R R n N

    R N R N n

    + =

    + +

    1 1 1

    1 1

    ,R n N>> :1

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    :

    f gk T

    c c

    +

    2

    2

    2 3

    3 5

    2 4

    q

    .

    gk Tq

    c=

    2

    3

    4

    :

    ( )V q C q gq f q= 2 3 4

    PH C q gq f q

    m= +

    2

    2 3 4

    2

    ( )v,

    lnP

    N V

    C C k Q

    = =

    2

    2

    2

    PCq g q f q

    mQ e dpdq

    h

    +

    =

    22 3 4

    21

    ( )Cq gq f qmQ e dq

    h

    =

    2 3 4

    2

    2

    ,y nn

    n

    nI e y dy

    +

    += =

    2

    1

    2

    1 1

    2

    o

    n

    n > 1

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    .

    ( ) ( )Cqm

    Q e gq f q g q f qh

    = + + + + +

    22

    3 4 2 6 2 8

    2

    21

    2L

    m f g f Q

    h c c c c

    = + + + +

    2 2

    2 2 3 2 4

    2 3 1 15 1 51

    4 16 32

    oL

    ( )v lnC k Q

    =

    2

    2

    2

    ( ) ( ) ( )k k c f c g c = + +

    23 2 2 3 2

    32 12 15 16

    v

    f c g f g

    C k k k T c c c

    +

    = + = + +

    2 2

    2

    3 2 3

    12 15 3 5

    1 8 2 4

    g

    .

    :

    ( )

    ( )

    exp exp

    exp exp

    Pdp cq

    mq

    Pdp cq

    m

    =

    22

    2

    2

    2

    2

    ( )( )

    gq f q qdq

    gq f q dq

    + + + + + +

    3 4

    3 4

    1

    1

    L

    L

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    ( )expm

    cq gq dqg k T

    q gc cm

    c

    = = = 2 4

    2 22

    2

    2

    3 3

    4 42

    -:

    ( ) ( ) , , ,. . .n

    E n x n n= + + =1 1

    1 22 2

    h o

    x

    )( 1

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    .

    expn

    ux n u n

    =

    + +

    21 1

    12 2o

    exp expn nu n ux n u n

    = =

    = + + + +

    21 1 1

    2 2 2o o

    exp expn n

    u n x u u nu

    = =

    = + + +

    2

    2

    1 1

    2 2o o

    exp

    sinhnu n

    u

    =

    + =

    1 1

    22

    2

    o

    sinh sinh

    Q x uu uu

    = +

    2

    1 2

    1 1

    2 22 2

    cosh

    sinh sinh

    uxu

    u uu

    = +

    2

    1 2

    22 2

    2 2

    sinh sinh cosh

    sinh sinh

    u u u

    xuu u

    + = +

    3 2

    4

    21 1 2 2 2

    22

    2 2

    cosh

    sinh sinh sinh

    u

    x uu u u

    = + +

    2

    3

    21 1 1 2

    22

    2 2 2

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    cosh

    sinh sinh sinh

    N

    N

    u

    Q x uu u u

    = + +

    2

    3

    21 1 1 2

    22

    2 2 2

    cot

    sinh

    N

    ux u gh

    u

    =

    211 1 2

    22

    2

    ( )ln ln sinh ln cotNu

    Q N u x u gh = +

    22 1 1 2

    2

    vln ln

    N NC k Q k Q

    = =

    2

    2 2

    2

    lnN

    u uk Q

    u u

    =

    2

    u = hu u u

    u u u

    +

    2 2

    2

    u u

    = =

    h

    ( )v ln NC k Qu u

    = +

    222

    2

    hh

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    .

    ln

    lnNN

    Qku ku Q

    u u

    = +

    2

    2

    2

    cotcot

    cosh sinhln

    sinh cot

    N

    ugh

    ux gh xu

    u uQ

    u uuxu gh

    +

    = +

    2

    2

    2

    21 2 4

    22 2

    1 1 22 2

    ( cot h )u

    x ux g

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    --

    No,.

    :

    n

    n

    Q e e = = +1 1

    ( )NN

    NQ Q e = = + 1 1

    ( )ln lnNA k T Q N k T e = = +1

    ( )

    ( )

    ,

    ,

    ln

    ln

    V T

    N V

    AN k e

    N

    A NS N k e

    T T e

    = = +

    = = + + +

    1

    11

    -:

    g-1

    1

    -

    g 2

    2

    :

    ln( ) ln( )P P

    s k P Pg g

    = +

    1 2

    1 2

    1 2

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    .

    ,P P2 1

    :

    P P+ =1 2

    1

    P)

    :

    ln ln ( )

    ( )

    x

    x

    g xS k g e

    gge

    g

    = + + + +

    2

    1

    11

    2

    1

    1

    xk T

    = 1 2

    = =g g1 2

    1

    .

    ) S .

    ( oTlnS k g

    1.

    :

    E1

    E2

    .

    g1

    g2

    E1

    E2

    :

    ' , , ,. . .i

    PP i

    g= =1

    1

    1 2

    ' , , ,. . .j

    PP j

    g= =2

    2

    1 2

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    i i j jP g P g + =1

    lnr r

    S k P P=

    ' ln ' ' ln 'g g

    i i j ji j

    S k P P k P P= =

    = 1 2

    1 1

    :

    { }' ln ' ' ln '

    ln ln

    i i j jS k g P P k g P P

    P P P Pk g g

    g g g g

    = +

    = +

    1 2

    1 1 2 2

    1 2

    1 1 2 2

    ln lnP PS k P Pg g

    = +

    1 21 2

    1 2

    ( )

    xE E

    E ExE

    ge

    g e g e gP

    gg e g e g eg e e E E gg

    = = = + ++

    2

    1 1

    1 1 1

    1 1 221 2 21

    1 2 11

    1

    11

    ( )

    ( )

    E E x

    E

    E EE E x

    g ge e

    g e g gP

    g gg e g e e eg g

    = = =+ + + +

    2 12 2

    22 1 1

    2 1 22 12 21 2

    1 1

    1 1 1

    ln ln xg

    P eg

    = +

    2

    1

    1

    1

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    .

    n ln ln ln lnxP g

    l P g e gg g

    = = +

    1 2

    1 1 1

    1 1

    1

    ln ln ln ln xg

    P g g x eg

    = +

    2

    2 2 1

    1

    1

    ln ln ln xP g

    g x eg g

    = +

    2 2

    1

    2 1

    1

    ln ln

    ln ln

    x

    x

    x

    x

    x

    gS k g e

    g ge

    g

    ge

    g gg x e

    g ge

    g

    = + +

    + + +

    2

    1

    2 1

    1

    2

    1 2

    1

    2 1

    1

    11

    1

    1

    1

    ln lnln

    x x

    x x x

    g ge g e

    gg g

    S k g g ge e e

    g g g

    +

    = + + +

    2 2

    1

    11 1

    2 2 2

    1 1 1

    1

    1 1 1

    lnx xx

    x x

    g gge ex e

    g gg

    g ge e

    g g

    +

    + +

    2 22

    1 11

    2 2

    1 1

    1

    1 1

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    ln ln

    x x x

    x

    x x x

    g g ge e x e

    g g g gS k g e

    g g gge e eg g g

    + + = + + + +

    2 2 2

    1 2 1 1

    12 2 21

    1 1 1

    1 1

    1

    1 1 1

    ln ln

    x

    x

    x x

    gx e

    g gS k g e

    g g ge e

    g g

    +

    = + + + +

    2

    2 1

    1

    1 2 1

    1 2

    1

    1

    ln ln x

    x

    g xS k g e

    gg

    eg

    +

    = + + +

    +

    2

    111

    2

    1

    1

    if g g= =1 2

    1

    ln xx

    g xS k e

    g e

    +

    = + +

    +

    2

    1

    11

    Ex

    k T

    = =

    1 o

    )-

    (

    .

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    .

    ,E E EE xr

    rr

    gQ g e g e g e g e e x

    g k T

    = = + = + =

    2 2 11 2 11 2 11

    1

    ln ln ln xg

    Q g E e

    g

    = + +

    1

    1 1

    2

    1

    lnA k T Q=

    ln ln xg

    A k T g E eg

    = + +

    1

    1 1

    2

    1

    ,

    lnln

    N V

    A QS k Q k T

    T T

    = = +

    ( )ln ln x

    x

    egQ Qk E

    gT k T g eg

    = = +

    2 2 12

    1221

    1

    1

    1

    ( )ln ln

    xx

    x

    eg g

    S k g E e k T E gg k T g eg

    = + + + +

    2 11 2

    1 1 1222 1

    1

    1

    11

    ln ln

    x

    x

    x

    gxe

    g gS k g E e E

    gg k T eg

    = + + + +

    2

    2 1

    1 1 121

    1

    11

    1

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    ln ln

    x

    x

    x

    gx e

    g gS k g e

    gg eg

    = + + + +

    2

    2 1

    121

    1

    1

    1

    ln ln x

    x

    g xS k g e

    gg eg

    +

    = + + + +

    2

    121

    1

    1

    1

    .

    .)

    lnT S k g =1

    o

    -

    N

    :E

    :

    cossin

    pppE

    m I I

    = + +

    222

    22 2 2

    I

    .

    .

    E k T

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    .

    :

    cossin

    cP PP

    Em I I

    = + +

    2 22

    22 2 2

    E

    .

    exp exp PP

    Q dq P dP dP d h m I

    =

    2222

    1 5

    14

    2 2o o

    co s si nsin

    P

    E Id e e dP

    2

    22

    o

    exp P

    P dPm

    2

    24

    2o

    y n

    nn

    nI e y dy

    +

    += =

    2

    1

    2

    1 1

    2

    o

    expd P d

    dPm

    d dmm m

    = =

    2

    14 2

    2 2

    22 2

    m

    =

    3

    22

    exp P I

    dPI

    =

    22

    2

    n > 1

    n

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    exp sinsin

    P IdP

    I

    =

    2

    2

    2

    2

    co s sin sin cos cosEd e d E E

    = + +

    2 2 2 2 2 211

    2o o L

    EE k T

    k T

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    .

    sinE

    Ak T N

    E E

    = = +

    2 2

    2 2 2

    1

    41

    18

    :

    sink T N E

    PV V

    E

    = = +

    2 2

    2 2 2141

    8

    xx

    +1

    11

    :

    , k T N k T N

    P E P E E E V V

    = = 2 2 2 2 2 2 21

    14 8 4

    :

    N

    VkT

    =

    2

    4

    N

    V k T

    = + = +

    2

    4o o

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    -

    :

    :

    ,

    ,

    N Er s

    r s N Er s

    r s

    ePe

    =

    :ln

    ,,

    ln ln N Er s

    r s r sr s

    P N E e

    =

    ,

    ln N Er s

    r s

    q e =

    ,ln r s r sP N E q =

    ,r s

    P,s r

    .

    , , , , ,, , , ,

    ln rr s r s r s r s s r sr s r s r s r s

    P P P N P E q P =

    ( ), ,,

    lnr s r s

    r s

    P P N E q N E q = = + +

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    :)--(q

    , ,,

    lnr s r s

    r s

    S k P P=

    -

    :

    V)o

    V

    :

    ( ), V

    p VV

    =1o

    ( )( )

    ( )( )

    ( )

    !,

    ! !

    N N N

    N V VP N V

    V VN N N

    =

    1

    o

    o

    o

    o o

    V:

    pV

    Vq == 11

    o

    ( )( )

    ,N

    N

    p N V=

    = 1o

    o

    ( )

    ( )

    ( )( )

    ( ) ( ) ( )

    ( )

    ( )

    !

    ! !

    N N NN

    N

    N N

    Np p

    N N N

    p p

    =

    = + = =

    1

    1 1 1

    o oo

    o

    o

    o

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    .

    ( )( )

    ( )

    ( ) ( )( )

    ( )

    ( ) ( )( )

    ( )

    !,

    ! !

    !

    ! !

    NN N N

    N

    NN N N

    N

    NN N P N V N p q

    N N N

    Np p q

    pN N N

    =

    =

    = =

    =

    o oo

    o

    o

    o o

    o

    oo

    ( ) ( )

    ( )

    ( ) ( ) ( )( )

    ( )

    ( )( ) ( )

    !

    ! !

    N NN N N

    N

    N

    Np p q p p q

    p pN N N

    pN p q pN

    =

    = = +

    = + =

    1

    o ooo

    o

    o

    o

    o o

    (

    ( )( ) ( )

    ( )

    !

    ! !

    N N NNN N p qN N N

    =

    2 2o

    o

    o

    ( ) ,N N N N N N Np N p N p N N p N p p p N pp p

    = = = +

    2 2

    2 2 2 2 2

    2 21

    ( ) ( )

    ( ) ( )( ) ( )( )

    ( ) ( )

    ! !

    ! ! ! !

    N NN N N N

    N N

    N NN p p N p q

    pN N N N N N

    = =

    = +

    2

    2 2

    2

    o oo oo

    o o

    o o

    ( ) ( )( )

    ( ) ( ) ( ) ( )Np p q pN p N N pN

    p

    = + + = +

    2

    2 2

    2 1

    o

    o o o o

    ( )( ) ( ) ( ) ( )N N p N p N p N pN p = = 2 2

    2 2 2 2 21

    o o o o

    )

    ( ) ( )( )N pN p = 1

    21o

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    ( )( )

    ( )( )

    ( )

    !,

    ! !

    N N NNp N V p qN N N

    =

    oo

    o

    ( ) ( )( ) ( ) ( )ln ln ! ln ! ln ! ln lnp N N N N N p N N q= + + o o o

    ( ) ( )

    ( )

    ( ) ( ) ( ) ( )

    ( )

    exp{ ln ln ln

    ln ln }

    p N N N N N N N N

    N p N N q

    =

    + +

    o o o o

    o

    ( ) ( ) ( )

    ( )

    ( ) ( ) ( ) ( )

    ( )

    ln ln ln

    ln ln

    f N N N N N N N N N

    N p N N q

    =

    + +

    o o o o

    o

    ( ) ( )( ) ( ) ( ) ( ) ...

    N N N N

    f N f Nf N f N N N N N

    N N= =

    = + + +

    2

    2

    2

    1

    2

    ( )( )ln ln ln lnN N

    fN N N p q

    N =

    = + +

    o

    ( )= oN pN

    ( )( )ln ln ln lnN N

    fN N p p q

    N =

    = + +

    1

    o

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    .

    ( )( ) ( )ln ln ln ln lnpN N p p q= + + + =1o o o

    =

    =

    o

    N N

    f

    N

    ( ) ( )N N

    f

    N N N N pqN=

    = =

    2

    2

    1 1 1

    o o

    ( ) ( ) ( )( )f N f N N NpqN= 21

    2 o

    ( ) ( ),

    , f N V

    P N V e=

    ( ) ( ) ( )

    ( )

    ( )

    ( )

    ( )

    ( )

    , exp

    exp

    p N V f N N pNpqN

    C N pN pqN

    =

    =

    2

    2

    1

    2

    1

    2

    o

    o

    o

    o

    ( )( )

    , ,P N V dN C pqN

    = = 1

    1

    2o o

    ( ) ( )( )( ) ( )

    , expp N V N pNpqN pqN

    =

    21 1

    2 2

    o

    o o

    )(

    !

    nn

    n ne

    2

  • 8/21/2019 Pathria Statistical Mechanics persian solution

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    ( )

    ln ! ln ln ln

    ln ln ln ln

    n n n n n ne

    n n n n n n n

    = +

    = + +

    12

    2

    12

    2

    ( )( )

    ( )( ) ( )

    ( )

    !,

    ! !

    N NNNp N V p pN N N

    =

    1

    oo

    o

    ( ) ( ), ,

    Nif p N N pN N N

    p = =

  • 8/21/2019 Pathria Statistical Mechanics persian solution

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    .

    ,

    ,

    ,

    N E ENr s sr

    r s N Er s

    r s

    N Er s

    r s

    e z eP

    De

    D e

    = =

    =

    Nr

    N N= .

    ( ) ( ),EN s

    N

    Ns

    z ez Q V T

    P ND D

    = =

    :

    ( ) ( )

    ,! !

    NN

    N

    V f TQQ V T

    N N

    = =1

    ( )( )expD z V f T=

    ( ) ( )

    ( )( ) ( ),

    !exp

    NNz V f TP N N z V f T

    N z V f T

    = =

    ( ) ( ) ( )

    ! !

    N N

    z V f T Nz V f T NP N e e

    N N

    = =

    .

    :

    N N=

    ( ) ( )! !

    N NN

    N

    N N

    N N e N NN N e

    N N

    = == = =

    2 2

    2 2

    o o

    ( ) ( ) ( )( )N N N

    N N N N N NN N

    = =

    21 2

    2 1

  • 8/21/2019 Pathria Statistical Mechanics persian solution

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    ( ) ( )

    ( ) ( )

    N N

    N N

    N N N N NN

    N N N N N

    N

    =

    = +

    22

    2

    2

    22

    2

    2

    ( )

    ( ) ( )

    !

    ! !

    =

    = =

    +

    =

    = +

    22

    2

    2

    22

    2

    o

    o o

    NN

    N

    N

    N N

    N N

    N N

    NN N N

    NN e

    N

    N Ne N e N

    N N NN

    N N N Ne N e e N e N N NN

    = + = +

    22 2

    2

    ( ) ( )! !

    N NN

    N

    N N

    N N

    e N NN N e N

    N N N

    e N e N

    N

    = =

    = =

    = =

    o o

    ( )N N N N = =2 2 2

    :

    ,

    ( ) ,V T

    N V SN k T d dp dT

    N N

    = =

    2

  • 8/21/2019 Pathria Statistical Mechanics persian solution

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    .

    ( )d pV pdV V dp pdV N d S dT = + = + +

    T T T T

    V p p

    V N V V V

    = =

    .

    , , , ,V T N T V T N T

    p N pN V V

    N V V N V

    = =

    2

    2 2

    :

    ,N T

    P N k T PV N k T

    V V

    = = 2

    , ,V T N T

    V p V N k T k T

    N N V N V N

    = = = +

    2 2

    2 2 2

    ( ) ( )k T

    N k T N N NN

    = = =

    1

    2

    .

    -

    :

    ( ) ( ), , ,H r r p p p p k r rm

    = + + 22 2

    1 2 1 2 1 2 1 2

    1 1

    2 2

    ( ) ( ), expQ V T H d p d qh

    = 3 3

    1 3

    1

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    ( ), ep p k

    r rm mQ V T d p d p e d r d r

    h

    =

    2 221 2

    1 23 3 3 32 2 21 1 2 1 23

    1

    ( ), e

    p kr r

    m

    Q V T d p e d r d r h

    =

    22

    21 23 3 32 2

    1 1 23

    1

    ,

    ,

    r Rr r r r

    R rr r R r

    + = =

    + = =

    1 2 1

    1 2 2

    2

    2

    d r d r J d R d r =

    33 3 3 3

    1 2

    ,det det

    ,

    r r

    r rr rJ

    r R r r

    R R

    = = =

    1 2

    1 2

    1 2

    1 1

    2 2 1

    21 1

    2 2

    ( ), e e epp pyx z

    m m mx y z

    kr

    Q V T d p d p d p

    h

    Ve d r

    + + +

    =

    222 2

    3 3 32 2 21 3

    2

    32

    1

    8

  • 8/21/2019 Pathria Statistical Mechanics persian solution

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    .

    ( ), ep kx rm

    x

    VQ V T d p e r dr

    h

    V m V m

    h h kk

    +

    =

    = =

    62

    2

    3 22 21 3

    33 3

    3 4 2

    33 3

    2

    48

    2 2

    8

    2

    o

    ( ) ( )( ),

    ,! !

    N

    N

    N

    V m

    h kQ V T

    Q V TN N

    = =

    334

    2

    3

    1

    2

    !

    N

    N

    NN N

    V Z m

    h k

    D z QN

    = =

    = =

    334

    2

    3

    2

    o o

    exp V Z m

    h k

    =

    334

    2

    3

    2

    ln

    ln

    Z V mq D

    h k

    k T Z k T V mp D

    V V h k

    = =

    = =

    334

    2

    3

    334

    2

    3

    2

    2

  • 8/21/2019 Pathria Statistical Mechanics persian solution

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    ln V m

    N z q z Dz z h k

    = = =

    334

    2

    3

    2

    exp

    ln lnN N

    V Z m

    h kD

    A k T k Tz z

    = =

    33

    4 2

    3

    2

    ln z V m

    N k T z k Th k

    =

    334

    2

    3

    2

    ( ), , z V m

    U q V T zh k

    = =

    334

    2

    3

    3 2

    -

    :

    :

    ( )

    V

    Q m k T h =

    3

    2

    1 3

    2

    =j(1

    2:(

  • 8/21/2019 Pathria Statistical Mechanics persian solution

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    .

    ( )

    ( )

    exp exp exp

    ,

    =

    = = +

    = = =

    1

    2

    11

    2

    1 1

    2 2

    12 2

    2

    B B B

    m

    B B

    Q gm H gH gH

    cosh gH cosh H g

    :

    ( ) ( )BV

    Q m k T cosh H h

    =3

    21 3

    2 2

    ( ) ( ) ( ), ,!

    N

    N B

    VQ V T N m k T cosh H

    N h

    =

    3

    23

    1 22

    ( ) ( )!

    NNN

    N BN N

    z VD z Q m k T cosh H

    N h

    = =

    = =

    3

    22

    2o o

    ( ) ( )exp!

    Nx

    BN

    x z Ve D m k T Cosh H

    N h

    =

    = =

    3

    23

    2

    o

    ( ) ( )

    ln

    ln

    N

    B

    DA k T

    z

    z Vk T m k T cosh H N z

    h

    =

    =

    3

    23

    22

    :)--(

    ( ) ( ) ( ),

    B BT N

    A z VM k T m k T sinh H

    H h

    = = 3

    22

  • 8/21/2019 Pathria Statistical Mechanics persian solution

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    :

    ( ) ( )B Bz V

    M m k T sinh Hh

    =

    3

    23

    22

    :

    fi

    Q HdM =

    TV.

    ( ) ( ) ( )B B Bz V

    dM m k T cosh H dH h

    =

    3

    23

    22

    ( ) ( ) ( )B B BHz V

    Q m k T cosh H H dH h

    =

    3

    23

    22

    o

    ( ) ( )HB Bz V m k T cosh H H dHh

    = 3

    22

    31 2 2

    o

    ( ) ( )

    ( )

    H

    H

    B B

    B

    H

    B

    B

    cosh H H dH H sinh H

    sinh H dH

    =

    1

    1

    o

    o

    o

    ( ) ( )B BB B

    Hsinh H cosh H

    =

    2

    11

    -

    :

  • 8/21/2019 Pathria Statistical Mechanics persian solution

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    .

    NNo

    :

    ( ) ( ) ( )

    ! !

    ! ! ! ! =

    o o

    o o

    N

    N

    N NQ a T

    N N N N N N

    .( )a T

    lnN

    A k T Q=

    ( ) ( ) ( ) ( )

    [ ln ln

    ln ln

    k T N N N N N N

    N N N N N N N a T

    = +

    + +

    o o o

    o o o

    ( ) ( ),

    [ ln ln ln ]V T

    A k T N N N a T N


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