Signature change in two-dimensional black-hole models of loop quantum gravity

Black hole entropy in Loop Quantum Gravity

We calculate the black hole entropy in Loop Quantum Gravity as a function of the horizon area and provide the exact formula for the leading and sub-leading terms. By comparison with the Bekenstein– Hawking formula we uniquely fix the value of the ’quantum of area’ in the theory. The Bekenstein–Hawking formula gives the leading term in the entropy of the black hole in the form S = 1 4 A l P (1) ...

Black hole spectroscopy from Loop Quantum Gravity models

Black hole interior from loop quantum gravity

In this paper we calculate modifications to the Schwarzschild solution by using a semiclassical analysis of loop quantum black hole. We obtain a metric inside the event horizon that coincides with the Schwarzschild solution near the horizon but that is substantially different at the Planck scale. In particular we obtain a bounce of the S sphere for a minimum value of the radius and that it is p...

Loop Quantum Gravity and Black Hole Physics

I summarize the basic ideas and formalism of loop quantum gravity. I illustrate the results on the discrete aspects of quantum geometry and two applications of these results to black hole physics. In particular, I discuss in detail the derivation of the Bekenstein-Hawking formula for the entropy of a black hole from first principles.

Black Hole Entropy from Loop Quantum Gravity.

We argue that the statistical entropy relevant for the thermal interactions of a black hole with its surroundings is (the logarithm of) the number of quantum microstates of the hole which are distinguishable from the hole's exterior, and which correspond to a given hole's macroscopic conguration. We compute this number explicitly from rst principles, for a Schwarzschild black hole, using nonper...