Monday 5 April, 2:30 pm, Curia II
Samir Mathur (Ohio State U)
mathur AT pacific.mps.ohio-state.edu
What is inside a black hole?


If we apply principles of quantum mechanics to black holes, then
we get several deep paradoxes. In this talk we will discuss give some
evidence arising from string theory which indicates that the interior
of the black hole horizon is a very nontrivial region, rather than
`empty space with a central singularity'. This modified picture  of the
hole would avoid the above paradoxes. The key physics point is that
when we make bound states of N quanta in string theory then the scale
of nonlocality is not planck length but N times planck length, and the
latter scale turns out to be of order the horizon radius.