Quasi-homogeneous geometrothermodynamics of a noncommutative Reissner-Nordstrom black hole

TL;DR

This paper investigates the thermodynamic behavior and phase transitions of a noncommutative Reissner-Nordstrom black hole using geometrothermodynamics, revealing the role of noncommutativity as a thermodynamic variable.

Contribution

It introduces a Legendre invariant formalism for noncommutative black holes and explores the impact of the noncommutative parameter on phase transitions.

Findings

Ricci scalar singularities identify phase transition points.

Noncommutative parameter acts as a thermodynamic variable.

Phase transitions can occur beyond heat capacity divergences.

Abstract

We present the thermodynamic properties of a noncommutative Reissner Nordstrom (NCRN) black hole (BH) modeled with Lorentzian distributions. The analysis is carried out using a Legendre invariant formalism called Geometrothermodynamics (GTD) which is applied to a quasihomogeneous system generated by the NCRN BH. This formalism enables the study of phase transitions by locating Ricci scalar singularities, from which the phase transition points are determined in terms of the thermodynamic variables. We also examine how the noncommutative (NC) parameter can be interpreted as a thermodynamic variable within quasi-homogeneous thermodynamic laws, highlighting its potential role on phase transitions beyond those well-known characterized by divergences in the heat capacity.