Radiation from Einstein-Gauss-Bonnet de Sitter Black Hole via Tunneling Process

TL;DR

This paper investigates the thermodynamics and radiation processes of 4D Einstein-Gauss-Bonnet black holes in various spacetimes, revealing unique temperature behaviors and correlations with higher-dimensional Lovelock gravity.

Contribution

It introduces a detailed analysis of tunneling radiation and thermodynamics for 4D EGB black holes across different asymptotic spacetimes, highlighting novel temperature evolution patterns.

Findings

In asymptotically flat spacetime, black hole temperature approaches zero at final evaporation.

In de Sitter spacetime, black hole and cosmological horizon temperatures tend to equilibrium.

Temperature behaviors match those of regular black holes in higher-dimensional Lovelock gravity.

Abstract

In this paper, we probe in 4D Einstein-Gauss-Bonnet black hole and its thermodynamics. We illustrate the three asymptotically 4D EGB spacetime as an asymptotically flat, de Sitter, and Anti-de Sitter. Also, we apply the tunneling of the massless particles from the horizon of 4D EGB gravity and we investigate the correlation between the emission modes and temperature of the horizon. In asymptotically flat spacetime, the existence of the coupling constant alone constructs the regular spacetime, the radiation deviates from the pure thermal, and the temperature of the black hole horizon would be zero in the final stage of the black hole evaporation. In Asymptotically de Sitter spacetime, results illustrate that the evolution of the temperatures is in direction of the remaining rest mass with the probably same temperature for the black hole and the cosmological horizon. In addition, the exciting result is that temperature behaviors exactly match with the temperature behaviors of a regular black hole in Lovelock gravity in a higher dimension.