Holographic Thermodynamics of Higher-Dimensional AdS Black Holes with CFT Rescaling

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Main Authors: Ladghami, Yahya, Ouali, Taoufik
Format: Preprint
Published: 2025
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author Ladghami, Yahya
Ouali, Taoufik
author_facet Ladghami, Yahya
Ouali, Taoufik
contents In this paper, we study the thermodynamic behavior of charged AdS black holes in higher-dimensional spacetimes within the framework of conformal holographic extended thermodynamics. This formalism is based on a novel AdS/CFT dictionary in which the conformal rescaling factor of the boundary conformal field theory (CFT) is treated as a thermodynamic parameter, while Newton's constant is held fixed and the AdS radius is allowed to vary. We explore how variations in the CFT state, represented by its central charge, influence the bulk thermodynamics, phase structure, and stability of black holes in five and six dimensions. Our analysis reveals the emergence of Van der Waals like phase transitions and critical phenomena governed by the central charge. Additionally, we find that the thermodynamic behavior of AdS black holes is affected by the dimensionality of the bulk spacetime, as we compare higher-dimensional black holes to lower-dimensional ones, such as BTZ black holes. These findings provide new insights into the role of boundary degrees of freedom in shaping the thermodynamics of gravitational systems via holography.
format Preprint
id arxiv_https___arxiv_org_abs_2510_05700
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Holographic Thermodynamics of Higher-Dimensional AdS Black Holes with CFT Rescaling
Ladghami, Yahya
Ouali, Taoufik
High Energy Physics - Theory
In this paper, we study the thermodynamic behavior of charged AdS black holes in higher-dimensional spacetimes within the framework of conformal holographic extended thermodynamics. This formalism is based on a novel AdS/CFT dictionary in which the conformal rescaling factor of the boundary conformal field theory (CFT) is treated as a thermodynamic parameter, while Newton's constant is held fixed and the AdS radius is allowed to vary. We explore how variations in the CFT state, represented by its central charge, influence the bulk thermodynamics, phase structure, and stability of black holes in five and six dimensions. Our analysis reveals the emergence of Van der Waals like phase transitions and critical phenomena governed by the central charge. Additionally, we find that the thermodynamic behavior of AdS black holes is affected by the dimensionality of the bulk spacetime, as we compare higher-dimensional black holes to lower-dimensional ones, such as BTZ black holes. These findings provide new insights into the role of boundary degrees of freedom in shaping the thermodynamics of gravitational systems via holography.
title Holographic Thermodynamics of Higher-Dimensional AdS Black Holes with CFT Rescaling
topic High Energy Physics - Theory
url https://arxiv.org/abs/2510.05700