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Wormholes, Time Machines and the Weak Energy Condition

Date post:	08-Jan-2016
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It is argued that, if the laws of physics permit an advanced civilization to create and maintain a wormhole in space for interstellar travel, than that wormhole can be converted to a time machine with which causality might be violatable. Whether wormholes can be created and maintained entails, deep ill-understood issues about cosmic censorship, quantum gravity and quantum field theory, including the question of whether field theory enforces an avaraged version of weak energy conditions.

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