Phase transitions in D-dimensional Gauss-Bonnet-Born-Infeld AdS black holes

TL;DR

This paper explores phase transitions in higher-dimensional Gauss-Bonnet-Born-Infeld AdS black holes, revealing second order transitions influenced by non-linear electrodynamics and curvature corrections across various dimensions.

Contribution

It provides a comprehensive analysis of phase transitions in D-dimensional Gauss-Bonnet-Born-Infeld AdS black holes, including free energy, Ehrenfest scheme, and Ruppeiner geometry, highlighting the impact of non-linearity.

Findings

Black holes exhibit second order phase transitions with discontinuities in specific heat.

Non-linearity from Born-Infeld electrodynamics affects phase transition characteristics.

Phase transition behavior varies across different spacetime dimensions D > 4.

Abstract

In this paper, we have investigated the phase transition in black holes when Gauss-Bonnet corrections to the spacetime curvature and Born-Infeld extension in stress-energy tensor of electromagnetic field are considered in a negative cosmological constant background. It is evident that the black hole undergoes a phase transition as the specific heat capacity at constant potential shows discontinuities. Further, the computation of the free energy of the black hole, the Ehrenfest scheme and the Ruppeiner state space geometry analysis are carried out to establish the second order nature of this phase transition. The effect of non-linearity arising from Born-Infeld electrodynamics is also evident from our analysis. Our investigations are done in general D-spacetime dimensions with D > 4, and specific computations have been carried out in D = 5, 6, 7 spacetime dimensions.