Physics & Astronomy Colloquium
3:30 PM, Friday, February 8, 2013
Room 155, Chem-Phys Building
Dr. Samir Mathur
Department of Physics
Ohio State University
The story of the Black Hole Information Paradox
Some 40 years ago Bekenstein argued that black holes should have an
enormous entropy. Shortly thereafter, Hawking showed that
black holes evaporate in a way that violates quantum mechanics.
The latter result has been a long standing problem,
known as the black hole information paradox.
Recent results in string theory has shown that the microstates
corresponding to Bekenstein's entropy are 'fuzzballs' that do not have a
regular horizon; the horizon of the hole arises as an emergent
statistical concept. Further, the large entropy of these states leads to a
violation of the semiclassical approximation at the horizon of a
black hole; this alters Hawking's computation and provides a
resolution of the information paradox.
Refreshments will be served in CP 177 at 3:15 PM