Aspects of the Thermo-Dynamics of a Black Hole with a Topological Defect

TL;DR

This paper explores the thermodynamic properties of black holes with topological defects like cosmic strings and monopoles, highlighting unique effects such as negative gravitational mass and super-radiance.

Contribution

It provides new insights into black hole thermodynamics in the presence of topological defects and discusses the physical implications of negative monopole mass.

Findings

Global monopoles can have negative gravitational mass.

Negative monopole mass leads to gravitational super-radiance.

Black hole thermodynamics is affected by topological defects.

Abstract

Aspects of the thermo-dynamics of a black hole which is either pierced by a cosmic gauge string or contains a global monopole are investigated. We also make some comments on the physical significance of the fact that the gravitational mass carried by a global monopole is negative. We note in particular that the negative monopole mass implies a gravitational super-radiance effect.