Black hole radiation spectrum in LQG: Isolated Horizon framework

TL;DR

This paper investigates how the degeneracy distribution of horizon area eigenstates in Loop Quantum Gravity influences the black hole radiation spectrum, proposing a phenomenological model that suggests potential observational signatures of quantum effects.

Contribution

It introduces a phenomenological model linking degeneracy distribution to radiation spectrum, offering a possible observational test for quantum black hole effects within the isolated horizon framework.

Findings

Entropy exhibits a stair-like structure due to degeneracy distribution

A phenomenological model predicts quantum effects in radiation spectrum

Potential observational signatures of quantum black holes are identified

Abstract

Recent detailed analysis within the Loop Quantum Gravity calculation of black hole entropy shows a stair-like structure in the behavior of entropy as a function of horizon area. The non-trivial distribution of the degeneracy of the black hole horizon area eigenstates is at the origin of this behavior. This degeneracy distribution is analyzed and a phenomenological model is put forward to study the implications of this distribution in the black hole radiation spectrum. Some qualitative quantum effects are obtained within the isolated horizon framework. This result provides us with a possible observational test of this model for quantum black holes.