# 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 |