Higher-dimensional origin of extended black hole thermodynamics

TL;DR

This paper uses holographic braneworlds to connect higher-dimensional theories with extended black hole thermodynamics, revealing how bulk thermodynamics induces variable pressure and work terms on lower-dimensional quantum black holes.

Contribution

It provides a higher-dimensional origin for extended black hole thermodynamics through holography, linking bulk and brane perspectives and including backreaction effects.

Findings

Bulk thermodynamics induces extended thermodynamics on the brane.

Variable pressure arises from brane tension variations.

Double holography offers a microscopic interpretation of black hole thermodynamics.

Abstract

Holographic braneworlds are used to present a higher-dimensional origin of extended black hole thermodynamics. In this framework, classical, asymptotically anti-de Sitter black holes map to quantum black holes in one dimension less, with a conformal matter sector that backreacts on the brane geometry. Varying the brane tension alone leads to a dynamical cosmological constant on the brane, and, correspondingly, a variable pressure attributed to the brane black hole. Thus, standard thermodynamics in the bulk, including a work term coming from the brane, induces extended thermodynamics on the brane, exactly, to all orders in the backreaction. A microsopic interpretation of the extended thermodynamics of specific quantum black holes is given via double holography.