Information loss, made worse by quantum gravity?

被引:32
作者
Bojowald, Martin [1 ]
机构
[1] Penn State Univ, Dept Phys, Inst Gravitat & Cosmos, 104 Davey Lab, University Pk, PA 16802 USA
基金
美国国家科学基金会;
关键词
signature change; loop quantum gravity; black holes; information loss; effective theory;
D O I
10.3389/fphy.2015.00033
中图分类号
O4 [物理学];
学科分类号
0702 ;
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.
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页数:9
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