Grey-body factors of higher dimensional regular black holes in quasi-topological theories

TL;DR

This paper investigates how higher-dimensional regular black holes in quasi-topological gravity affect grey-body factors and Hawking radiation, revealing significant suppression compared to classical solutions.

Contribution

It provides the first detailed analysis of grey-body factors and Hawking radiation in higher-dimensional regular black holes within quasi-topological gravity.

Findings

Grey-body factors are significantly suppressed in regular black holes.

Hawking evaporation rates are lower than those of singular black holes.

Infinite-curvature corrections remove singularities while maintaining horizons.

Abstract

We study grey-body factors and Hawking radiation of higher-dimensional regular black holes arising in quasi-topological gravity. These spacetimes incorporate infinite-curvature corrections that remove the central singularity while preserving an event horizon and a well-defined semiclassical description. We show that, for all considered regular black hole models, the transmission of radiation and the corresponding Hawking evaporation are significantly suppressed compared to the singular black hole solutions of General Relativity.