Ruppeiner Geometry of RN Black Holes: Flat or Curved?

Details Ruppeiner Geometry of RN Black Holes: Flat or Curved? Ruppeiner Geometry of RN Black Holes: Flat or Curved?

2007-06-23

arxiv.org/abs/0706.3450v1

JHEP 0706:059,2007

Physics

High Energy Physics

High Energy Physics - Theory

9 pages

Scientific paper

10.1088/1126-6708/2007/06/059

In some recent studies \cite{aman1, aman2, aman3}, Aman {\it et al.} used the Ruppeiner scalar as a measure of underlying interactions of Reissner-Nordstr\"{o}m 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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