Time travel paradoxes and multiple histories

  title={Time travel paradoxes and multiple histories},
  author={J. Hauser and Barak Shoshany},
  journal={Physical Review D},
If time travel is possible, it seems to inevitably lead to paradoxes. These include consistency paradoxes, such as the famous grandfather paradox, and bootstrap paradoxes, where something is created out of nothing. One proposed class of resolutions to these paradoxes allows for multiple histories (or timelines), such that any changes to the past occur in a new history, independent of the one where the time traveler originated. We introduce a simple mathematical model for a spacetime with a time… 
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