Quantum mechanics and the time travel paradox

Details Quantum mechanics and the time travel paradox Quantum mechanics and the time travel paradox

2005-06-17

arxiv.org/abs/quant-ph/0506141v1

D. T. Pegg, Times' arrows, quantum measurement and superluminal behavior (eds. D. Mugnai, A. Ranfagni and L. S. Schulman) (Con

Physics

Quantum Physics

18 pages, 3 figures

Scientific paper

The closed causal chains arising from backward time travel do not lead to paradoxes if they are self consistent. This raises the question as to how physics ensures that only self-consistent loops are possible. We show that, for one particular case at least, the condition of self consistency is ensured by the interference of quantum mechanical amplitudes associated with the loop. If this can be applied to all loops then we have a mechanism by which inconsistent loops eliminate themselves.

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