More quantum noise from wormholes

Aug 19, 2020
15 pages
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Abstract: (arXiv)
For black hole evaporation to be unitary, the naive density matrix of Hawking radiation needs to be corrected with a sprinkling of pseudorandom "noise." Using wormholes, semiclassical gravity appears to describe an averaged "true random" theory of this noise. We discuss the wormholes in dilaton gravity theories with matter. They are classical solutions that depend on a small amount of backreaction from matter fields, and they are closely related to the wormholes that give the Page curve.
Note:
  • 15 pages plus appendices
  • noise: quantum
  • gravitation: semiclassical
  • black hole: evaporation
  • gravitation: dilaton
  • radiation: Hawking
  • wormhole
  • density matrix
  • back reaction
  • unitarity
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