Hawking radiation in Reissner-Nordstr\"{o}m blackhole with a global monopole via Covariant anomalies and Effective action

TL;DR

This paper derives Hawking radiation from a charged black hole with a global monopole using covariant anomaly and effective action methods, focusing on a general spherically symmetric spacetime.

Contribution

It applies covariant anomaly cancellation and effective action techniques to a Reissner-Nordström black hole with a global monopole, extending previous methods to more general black hole geometries.

Findings

Hawking radiation is successfully derived for the black hole with a global monopole.

The methods confirm the universality of Hawking radiation in complex black hole spacetimes.

The approach uses covariant boundary conditions at the event horizon.

Abstract

We adopt the covariant anomaly cancellation method as well as the effective action approach to obtain the Hawking radiation from the Reissner-Nordstr\"{o}m blackhole with a global monopole falling in the class of the most general spherically symmetric charged blackhole $(\sqrt{-g}\neq1)$, using only covariant boundary condition at the event horizon.