Euclidean quantum gravity for Kerr-Newman Spacetimes

TL;DR

This paper calculates the entropy of Kerr-Newman black holes using path integral formalism and second order metric perturbations, contributing to understanding black hole radiation and entropy.

Contribution

It introduces a method to compute black hole entropy via second order metric perturbations in the path integral framework for Kerr-Newman spacetimes.

Findings

Calculated black hole entropy from the action.

Applied path integral formalism to Kerr-Newman metrics.

Analyzed second order metric perturbations.

Abstract

It is very important to calculate the amount of radiation from a black hole as the radiation from a black hole contributes to its entropy. In this paper I have calculated the Entropy of a black hole from the action. I have used path integral formalism to calculate the second order perturbation of the metric in the action for a generalized Kerr-Newman metric.