Applications of the Tunneling Method to Particle Decay and Radiation from Naked Singularities

TL;DR

This paper explores particle decay and radiation from naked singularities in cosmological and black hole models using the tunneling method, revealing consistency with quantum field theory results.

Contribution

It applies the Hamilton-Jacobi tunneling method to analyze decay and radiation from naked singularities, demonstrating agreement with quantum field theory calculations.

Findings

Tunneling amplitude matches one-loop quantum field theory results.

Decay processes in FRW models are characterized using tunneling methods.

Emission from naked singularities can be effectively studied with this approach.

Abstract

Following recent literature on dS instability in presence of interactions, we study the decay of massive particles in general FRW models and the emission from naked singularities either associated with 4D charged black holes or with 2D shock waves, by means of the Hamilton--Jacobi tunneling method. It is shown that the two-dimensional semi-classical tunneling amplitude from a naked singularity computed in that way is the same as the one-loop result of quantum field theory.