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SUMMARY:The black hole information paradox: origin and proposed resolution
  - Ramy Brustein\, Ben-Gurion University
DTSTART:20151016T120000Z
DTEND:20151016T130000Z
UID:TALK61389@talks.cam.ac.uk
CONTACT:43345
DESCRIPTION:Hawking has discovered more than 40 years ago that black holes
  (BH’s) evaporate.  Ever since\, ideas about how they evaporate have bee
 n a source of constant interest and controversy. In Hawking’s model\, th
 e process of BH evaporation respects the Einstein equivalence principle bu
 t it is not unitary. Page has proposed a model of unitary evaporation. How
 ever\, this class of models was recently found to be incompatible with the
  equivalence principle.  After reviewing this state of affairs\, I will ar
 gue that the origin for many of the difficulties is that BH’s are treate
 d as geometric\, infinite mass objects and thus their quantum fluctuations
  are completely ignored.   I will present a model of how finite mass BH’
 s evaporate and outline how both unitarity and the equivalence principle c
 an be respected. The model suggest that the interior of the BH is a highly
  quantum bound state.
LOCATION:Pavilion B Potter Room (B1.19)
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