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SUMMARY:Recent developments in computing the quantum entropy of supersymme
 tric black holes and exact holography - Joao Gomes (DAMTP)
DTSTART:20121102T130000Z
DTEND:20121102T140000Z
UID:TALK39641@talks.cam.ac.uk
CONTACT:Ivan Agullo
DESCRIPTION:In this talk I will review recent developments in the computat
 ion of quantum corrections to the entropy of supersymmetric black holes ba
 sed on the AdS2/CFT1 correspondence. The use of supersymmetric localizatio
 n of supergravity on AdS2xS2 is able to reduce a path integral over string
  fields to a finite dimensional integral. This path integral is the quantu
 m version of Wald's entropy. We look in particular to 1/8 BPS black holes 
 in four dimensional N=8 string theory and compare the gravity computation 
 with the well known microscopic answer. We find exact agreement\, up to mu
 ch subleading non-perturbative corrections that can in principle be comput
 ed. These results go well beyond the large charge approximation and consti
 tute a first example of exact holography.\n
LOCATION:Pavilion B Potter Room (B1.19)
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