Ruppeiner geometry of RN black holes: flat or curved?

被引：102

作者：

Mirza, Behrouz ^{[1
]}

Zamaninasab, Mohammad ^{[1
]}

机构：

[1] Isfahan Univ Technol, Dept Phys, Esfahan 84156836111, Iran

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2007年 / 06期

关键词：

black holes; classical theories of gravity;

D O I：

10.1088/1126-6708/2007/06/059

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

In some recent studies [1-3], Aman et al. used the Ruppeiner scalar as a measure of underlying interactions of Reissner-Nordstrom black holes, indicating that it is a non-interacting, statistical system for which classical thermodynamics could be used at any scale. Here, we show that if we use the complete set of thermodynamic variables, a non-flat state space will be produced. Furthermore, the Ruppeiner curvature diverges at extremal limits, as it would for other types of black holes.

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页数：12

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