Particle Radiation From Gibbons-Maeda Black Hole

TL;DR

This paper analyzes particle radiation from Gibbons-Maeda black holes, demonstrating that tunnelling rates align with entropy changes and suggesting information conservation, with implications for black hole thermodynamics.

Contribution

It introduces a tunnelling approach considering self-gravitation for charged particles, revealing non-thermal spectra and supporting information preservation in black hole radiation.

Findings

Tunnelling rate equals the exponential of entropy difference.

Radiation spectrum deviates from pure thermal distribution.

Supports the idea of information conservation in black hole evaporation.

Abstract

This paper investigates the particle radiation from Gibbons-Maeda black hole. Taking into account the self-gravitation of the particle, we calculate the tunnelling rate of the massless particle across the horizon, then we promote the work to the radiation of the charged particle. The calculations prove that the rate of tunnelling equals precisely the exponent of the difference of the black hole entropy before and after emission and the radiation spectrum deviates from exact thermal. The conclusion supports the viewpoint of information conservation.