English Explanatory Dictionary

Polchinski's paradox

English dictionary entry

Meanings

name
  1. A potential paradox serving as a comment on the Novikov self-consistency principle, in which a billiard ball, sent back in time through a wormhole, is launched at such an angle that, upon exiting the wormhole in the past, it collides with its earlier self, knocking it off course and preventing it from entering the wormhole in the first place.

Word forms

Polchinski's paradox

Etymology

Devised by Joseph Polchinski, American physicist.

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