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quant-ph1998
Time Machines and the Breakdown of Unitarity
Frank Antonsen, Karsten Bormann
We present a generic way of thinking about time machines from the view of a far away observer. In this model the universe consists of three (or more) regions: One containing the en…
quant-ph1996
Wormholes and Time-Machines
Frank Antonsen, Karsten Bormann
It has been proposed that wormholes can be made to function as time-machines. This opens up the question of whether this can be accomodated within a self-consistent physics or not.…