Entropy of black holes with arbitrary shapes in loop quantum gravity

被引：0

作者：

ShuPeng Song ^{[1
,2
]}

HaiDa Li ^{[2
]}

YongGe Ma ^{[1
,2
]}

CongZhang ^{[3
]}

机构：

[1] School of Physics and Technology,Xinjiang University

[2] Department of Physics,Beijing Normal University

[3] Faculty of Physics,University of Warsaw

来源：

Science China(Physics,Mechanics & Astronomy) | 2021年 / 12期

基金：

中国国家自然科学基金;

关键词：

D O I：

暂无

中图分类号：

P145.8 [塌缩星（黑洞）];

学科分类号：

070401 ;

摘要：

The quasi-local notion of an isolated horizon is employed to study the entropy of black holes without any particular symmetry in loop quantum gravity. The idea of characterizing the shape of a horizon by a sequence of local areas is successfully applied in the scheme to calculate the entropy by the S O(1, 1) BF boundary theory matching loop quantum gravity in the bulk. The generating function for calculating the microscopical degrees of freedom of a given isolated horizon is obtained. Numerical computations of small black holes indicate a new entropy formula containing the quantum correction related to the partition of the horizon. Further evidence shows that, for a given horizon area, the entropy decreases as a black hole deviates from the spherically symmetric one,and the entropy formula is also well suitable for big black holes.

引用

页码：80 / 87

页数：8

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