Can one region of space encode another?

PIRSA ID: 23110086
Series: Quantum Fields & String Seminars
Event Type: Seminar
Scientific Area(s):
Quantum Fields and Strings
End date:
Speaker(s):
  • Charlie Cummings, University of Pennsylvania
November 28, 2023 at 2:00 PM Space Room

Using a novel version of the gravitational path integral for compact spatial regions at a moment of time symmetry, I argue that a region of space can encode a larger one. In particular, I show that the entanglement entropy of a region of space equals the area of the boundary of the smallest region that contains it. The key insight is to include the effects of the gravitational edge modes associated with the region in the path integral. This result is consistent with a recent conjecture by Bousso and Penington.

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Zoom link https://pitp.zoom.us/j/93301151464?pwd=Z2t5QlpUQ3hoaEkwQlFZS2tITGpEQT09