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SUMMARY:Coarse-grained entropy and causality in AdS/CFT - William Kelly (U
 CSB)
DTSTART:20131108T130000Z
DTEND:20131108T140000Z
UID:TALK48604@talks.cam.ac.uk
CONTACT:Helvi Witek
DESCRIPTION:While the emergence of bulk locality in AdS/CFT is not fully u
 nderstood\, progress has been made towards understanding how pieces of the
  bulk geometry are encoded in subregions of the CFT.  Recently\, Hubeny an
 d Rangamani have proposed that a modification of the Ryu-Takayanagi entrop
 y called the 'causal holographic information' (so called because extremal 
 surfaces are replaced with causal boundaries) quantifies the minimum infor
 mation needed to reconstruct certain causally defined bulk regions.  I wil
 l argue that the boundary dual of the causal holographic information is a 
 coarse-grained entropy which tracks the one-point functions in the associa
 ted boundary domain of dependence.  The talk will focus on the motivation 
 and evidence for this conjecture as well the prospects for future precisio
 n tests.
LOCATION:Pavilion B Potter Room (B1.19)
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