Document Type

Article

Publication Date

8-14-2014

Publication Title

Physical Review D

Volume

90

Abstract

The cosmological constant is treated as a thermodynamical parameter in the framework of two-dimensional dilaton gravity. We find that the cosmological constant behaves as a U(1) charge with a confining potential, and that such potentials require a novel Born-Infeld boundary term in the action. The free energy and other thermodynamical quantities of interest are derived, from first principles, in a way that is essentially model independent. We discover that there is always a Schottky anomaly in the specific heat and explain its physical origin. Finally, we apply these results to specific examples, like anti-de Sitter–Schwarzschild–Tangherlini black holes, Bañados-Teitelboim-Zanelli black holes and the Jackiw-Teitelboim model.

Comments

Author Posting. © American Physical Society, 2014. This article is posted here by permission of the American Physical Society for personal use, not for redistribution. The article was published in Physical Review D, Vol. 90, August 2014, http://dx.doi.org/10.1103/PhysRevD.90.044032

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