English

A note on black hole entropy, area spectrum, and evaporation

General Relativity and Quantum Cosmology 2015-05-18 v2 High Energy Physics - Theory

Abstract

We argue that a process where a fuzzy space splits in two others can be used to explain the origin of the black hole entropy, and why a "generalized second law of thermodynamics" appears to hold in the presence of black holes. We reach the Bekenstein-Hawking formula from the count of the microstates of a black hole modeled by a fuzzy space. In this approach, a discrete area spectrum for the black hole, which becomes increasingly spaced as the black hole approaches the Planck scale, is obtained. We show that, as a consequence of this, the black hole radiation becomes less and less entropic as the black hole evaporates, in a way that some information about its initial state could be recovered.

Keywords

Cite

@article{arxiv.1003.3679,
  title  = {A note on black hole entropy, area spectrum, and evaporation},
  author = {C. A. S. Silva and R. R. Landim},
  journal= {arXiv preprint arXiv:1003.3679},
  year   = {2015}
}

Comments

4 pages, 2 figures