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CATEGORIES:Colloquium
DESCRIPTION:General Physics Colloquium\, Professor Tom Hartman\, Stanford U
 niversity\n\nTitle:  Quantum Gravity in Flatland:  An Adventure in 2+1 Dime
 nsions\n\nHost:  Liam McAllister\n\nAbstract:  The quantum theory of gravit
 y involves a sum over all possible shapes of the universe. While we are far
  from a complete solution to this problem in our 3+1 dimensional world\, it
  is much simpler in "Flatland": a toy model where space has only two dimens
 ions. In this colloquium\, I will describe how the sum over geometries in 2
 +1 dimensional quantum gravity can be recast as an average over disorder. T
 his leads to an exact duality that relates the volumes of hyperbolic 3-mani
 folds to a quantum field theory with random interactions. I will also discu
 ss the implications for a realistic theory of gravity in 3+1 dimensions\, a
 nd for chaotic quantum systems that might be possible to build in the lab o
 r simulate on a quantum computer. This talk is for a broad physics audience
 .
DTEND:20260202T220000Z
DTSTAMP:20260510T180012Z
DTSTART:20260202T210000Z
GEO:42.449066;-76.481926
LOCATION:Rockefeller Hall\, 201\, Schwartz Auditorium
SEQUENCE:0
SUMMARY:Department of Physics Colloquium\, Professor Tom Hartman\, Stanford
  University
UID:tag:localist.com\,2008:EventInstance_51871417195593
URL:https://events.cornell.edu/event/department-of-physics-colloquium-profe
 ssor-tom-hartman-stanford-university
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