Entropy spectra of single horizon black holes in two dimensions

TL;DR

This paper investigates the entropy spectra of various two-dimensional black holes using the Hod conjecture and its Maggiore modification, providing insights into the quantization of black hole entropy.

Contribution

It extends the analysis of black hole entropy spectra to general, single horizon, two-dimensional black holes, including Witten and AdS(2) black holes, and discusses their generic features.

Findings

Entropy quanta are computed for various two-dimensional black holes.

Results suggest potential universality of entropy spectra in two-dimensional models.

The study extends previous work on black hole entropy quantization to new classes of black holes.

Abstract

The Hod conjecture proposes that the asymptotic quasinormal frequencies determine the entropy quantum of a black hole. Considering the Maggiore modification of this conjecture we calculate the entropy spectra of general, single horizon, asymptotically flat black holes in two-dimensional dilaton gravity. We also compute the entropy quanta of the two-dimensional Witten and AdS(2) black holes. Using the results for the entropy quanta of these two-dimensional black holes we discuss whether the produced values are generic. Finally we extend the results on the entropy spectra of other black holes.