New Construction of Black Hole Solution in Non-Commutative Geometry and their Thermodynamic Properties

TL;DR

This paper introduces a novel method for constructing non-commutative black hole solutions using the Seiberg-Witten map, and analyzes their thermodynamic properties, revealing effects like temperature regulation and phase transitions.

Contribution

The paper presents an exact, less cumbersome construction of non-commutative black holes and explores their thermodynamics and quantum radiation properties.

Findings

Non-commutativity removes temperature divergence at evaporation's end.

Induces a second-order phase transition in black hole thermodynamics.

Suppresses particle-number density and weakens emission correlations.

Abstract

We present a new method to construct black hole solutions in non-commutative (NC) gauge theory. First we obtain the NC correction to the Newton potential via the Seiberg-Witten (SW) map, and then solve the Einstein equations in the presence of the resulting NC matter density at first order in the NC parameter. The same procedure is applied to construct a charged solution with NC \(U(1)\) symmetry. This method yields an exact black hole solution in NC gauge theory at the stated order and is considerably less cumbersome than other NC gauge theory approaches to gravity. As an application, we analyze the thermodynamic properties of the new solutions: we compute the ADM mass, Hawking temperature, entropy, heat capacity and free energy, both in the absence and in the presence of pressure. Our results show that non-commutativity removes the temperature divergence at the final stage of evaporation and induces a second-order phase transition; in the presence of pressure we recover a Hawking-Page-like phase transition. We then investigate the susceptibility and linear response of the black hole to changes in the NC parameter. Our results show high sensitivity to small changes in the NC parameter for small black holes, while the sensitivity becomes weaker for larger ones. Finally, we study quantum tunneling in this geometry for both thermal and non-thermal radiation, and we investigate the particle-number density and statistical correlations of successive emissions. We find that the NC deformation suppresses the particle-number density and weakens correlations between successive emissions, effectively acting as a barrier to particle escape.