4D-EGB Black Holes in RPS Thermodynamics

Abstract

In this paper, we study thermodynamics of charged and uncharged 4-Dimension Einstein-Gauss-Bonnet (4D-EGB) black holes. The context of this study is the Visser's holographic thermodynamics with a fixed anti-de Sitter radius and a variable Newton constant known as restricted phase space thermodynamics (RPST). Our setup is constructed by using the AdS/CFT correspondence and by introducing a conjugate quantity of the Gauss-Bonnet parameter. By this ansatz, we conclude that the Gauss-Bonnet action multiplied by a temperature, behaves as a free energy. We derive the conjugate quantities corresponding to the first law in the RPST formalism. The study of the $T-S$ processes and the effect of the Gauss-Bonnet constant, $\alpha$, show that thermodynamic properties of charged black holes depend on the Gauss-Bonnet term and the charge of black holes. For an uncharged black holes, the effect of Gauss-Bonnet becomes crucial, as it behaves as a charged black hole with an effective charge. Finally, we find that the Hawking-Page phase transition occurs between a large black hole and a thermal AdS space.

12 pages, 4 figures

References in corpus (4)

• Dark energy in modified Gauss-Bonnet gravity: late-time acceleration and the hierarchy problem
• Restricted phase space thermodynamics for AdS black holes via holography
• Thermodynamics of Kerr-AdS black holes in the restricted phase space
• Restricted phase space thermodynamics for black holes in higher dimensions and higher curvature gravities

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