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SUMMARY:Refining Generalized Entropy - Joan Camps (DAMTP)
DTSTART:20150123T130000Z
DTEND:20150123T140000Z
UID:TALK57447@talks.cam.ac.uk
CONTACT:Benson Way
DESCRIPTION:The Ryu-Takayanagi proposal in AdS/CFT hints to a deep role of
  entanglement entropy in the mechanism of holography. Lewkowycz and Maldac
 ena have given a derivation of this proposal in a construction called 'gen
 eralized entropy'. The ingredients of generalized entropy are Euclidean qu
 antum gravity and the replica trick in the dual theory. I will review the 
 original construction and some recent refinements of it. These refinements
  (1) still use the replica trick\, but drop the assumption of replica symm
 etry---thus showing that Ryu-Takayangi follows independently from it\; and
  (2) are essential for the construction to work away from the general rela
 tivity limit of holography.
LOCATION:Pavilion B Potter Room (B1.19)
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