LQG Black Holes Speaker(s): Leonardo Modesto
Abstract: In this talk we introduce loop quantum gravity and we apply the theory to the black hole singularity problem. The Schwarzschild black hole solution inside the event horizon coincides with the KantowskiSachs spacetime and we can study a simple spherically symmetric minisuperspace model. We show the classical black hole singularity is controlled by the quantum theory and the spacetime can be dynamically extended beyond the classical singularity. We consider a semiclassical analysis of the black hole in LQG and we focus our attention on the spacetime structure. The semiclassical solution is regular everywhere and similar to the ReissnerNordstrom metric. The LQG black hole metric interpolates between two asymptotically flat regions, the 'r=infinity' region and the 'r=0' region. The metric is selfdual in the sense it is invariant under the symmetry (r >1/r) which relates small and large distances. We study the thermodynamics of the semiclassical solution.
Date: 23/01/2009  10:30 am
Collection: Black Holes and Quantum Physics  2009
