by
Lorenzo Pieri(INFN, Rome2 & Queen Mary, U. of London & Rome U., Tor Vergata)
→
Europe/Rome
0M03 (M. S. Angelo)
0M03
M. S. Angelo
Description
One of the most fascinating problems in theoretical physics is the black hole information paradox. To solve it, one needs to identify the quantum structure of black hole, the micro states, giving a statistical meaning to the Bekenstein-Hawking entropy. Probably the major success of string theory so far is the counting of black hole micro states in the regime of the coupling in which they can be described in terms of microscopic D-branes constituents. Even though we can count the micro states of many systems with different dimensionality and asymptotic charges, it is still missing a clear description of the micro states when the gravity regime is valid. This is particularly true in four dimensions, where very little is now. In this talk we will focus on black hole micro states in four dimensions, and we will see the same problem from different perspectives: string theory scattering amplitudes, supergravity solutions and supersymmetric quantum mechanics on the D-branes world-volumes. A fascinating possibility emerges: the black hole can be seen as emerging from a superposition of smooth, singularity-free and horizonless solution.
