Black hole evaporation: information loss but no paradox
Abstract
The process of black hole evaporation resulting from the Hawking effect has generated an intense controversy regarding its potential conflict with quantum mechanics' unitary evolution. A recent set of works by a collaboration involving one of us, have revised the controversy with the aims of, on one hand, clarifying some conceptual issues surrounding it, and, at the same time, arguing that collapse theories have the potential to offer a satisfactory resolution of the socalled paradox. Here we show an explicit calculation supporting this claim using a simplified model of black hole creation and evaporation, known as the CGHS model, together with a dynamical reduction theory, known as CSL, and some speculative, but seemingly natural ideas about the role of quantum gravity in connection with the wouldbe singularity. This work represents a specific realization of general ideas first discussed in Okon and Sudarsky (Found Phys 44:114143, 2014 and a complete and detailed analysis of a model first considered in Modak et al. (Phys Rev D 91(12):124009, 2015.
 Publication:

General Relativity and Gravitation
 Pub Date:
 October 2015
 DOI:
 10.1007/s107140151960y
 arXiv:
 arXiv:1406.4898
 Bibcode:
 2015GReGr..47..120M
 Keywords:

 Black hole evaporation;
 Information paradox;
 Measurement problem;
 Quantum foundation;
 General Relativity and Quantum Cosmology;
 High Energy Physics  Theory;
 Quantum Physics
 EPrint:
 39 pages, 6 figures. Matches accepted version in General Relativity and Gravitation