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Ciro Santilli @cirosantilli 37

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 Incoming links: Causality

Faster-than-light implies time travel  Updated 2025-05-29  +Created 1970-01-01
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Figure 1.
Spacetime diagram illustrating how faster-than-light travel implies time travel
. Legend an explanation are shown in this answer.
Bibliography:
  • physics.stackexchange.com/questions/13001/does-superluminal-travel-imply-travelling-back-in-time/615079#615079
  • physics.stackexchange.com/questions/574395/why-would-ftl-imply-time-travel
  • physics.stackexchange.com/questions/516767/how-does-a-tachyonic-antitelephone-work
  • www.physicsmatt.com/blog/2016/8/25/why-ftl-implies-time-travel shows the causality violation on a Spacetime diagram
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