Thermodynamics in Black-hole/CFT Correspondence

TL;DR

This paper demonstrates that the thermodynamics laws of black hole horizons encode the dual conformal field theory's universal data, highlighting the inner horizon's potential role in holographic descriptions.

Contribution

It reveals that the thermodynamics of both horizons fully encodes the dual CFT's central charges and temperatures, emphasizing the inner horizon's significance in holography.

Findings

Thermodynamics laws determine dual CFT parameters.

Inner horizon thermodynamics is crucial for holographic understanding.

Dual pictures vary with different perturbations.

Abstract

The area law of Bekenstein-Hawking entropy of the black hole suggests that the black hole should have a lower-dimensional holographic description. It has been found recently that a large class of rotating and charged black holes could be holographically described a two-dimensional (2D) conformal field theory (CFT). We show that the universal information of the dual CFT, including the central charges and the temperatures, is fully encoded in the thermodynamics laws of both outer and inner horizons. These laws, characterizing how the black hole responds under the perturbation, allows us to read different dual pictures with respect to different kinds of perturbations. The remarkable effectiveness of this thermodynamics method suggest that the inner horizon could play a key role in the study of holographic description of the black hole.