Information loss, made worse by quantum gravity?

Frontiers in Physics

Bojowald, Martin¹ 

[1] Department of Physics, Institute for Gravitation and the Cosmos, The Pennsylvania State University, University Park, PA, USA

关键词: signature change;    loop quantum gravity;    black holes;    information loss;    Effective theory;   

DOI  :  10.3389/fphy.2015.00033

学科分类：物理（综合）

来源: Frontiers

【 摘 要 】

Quantum gravity is often expected to solve both the singularity problem and the information-loss problem of black holes. This article presents an example from loop quantum gravity in which the singularity problem is solved in such a way that the information-loss problem is made worse. Quantum effects in this scenario, in contrast to previous non-singular models, do not eliminate the event horizon and introduce a new Cauchy horizon where determinism breaks down. Although infinities are avoided, for all practical purposes the core of the black hole plays the role of a naked singularity. Recent developments in loop quantum gravity indicate that this aggravated information loss problem is likely to be the generic outcome, putting strong conceptual pressure on the theory.

【 授权许可】

CC BY