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PRODID:UW-Madison-Physics-Events
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SEQUENCE:0
UID:UW-Physics-Event-3377
DTSTART:20141003T203000Z
DTEND:20141003T213000Z
DTSTAMP:20260419T161321Z
LAST-MODIFIED:20150420T215323Z
LOCATION:2241 Chamberlin Hall (coffee at 4:30 pm)
SUMMARY:The Black Hole Information Paradox\, and its resolution in str
 ing theory\, Physics Department Colloquium\, Samir Mathur\, The Ohio S
 tate University
DESCRIPTION:Some 40 years ago Hawking found a remarkable contradiction
 : if we accept the standard behavior of gravity in regions of low curv
 ature\, then the evolution of black holes will violate quantum mechani
 cs. Resolving this paradox would require a basic change in our underst
 anding of spacetime and/or quantum theory. In recent years the paradox
  has found an interesting resolution through string theory. While quan
 tum gravity is normally expected to be important only at distances of 
 order planck length\, the situation changes when a large number N of p
 articles are involved\, as for instance in the situation where we make
  a large black hole. Then the length scale of quantum gravity effects 
 grows with N\, altering the black hole structure to a &quot\;fuzzball&
 quot\;\; this effect resolves the paradox.
URL:https://www.physics.wisc.edu/events/?id=3377
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