Black hole radiance, short distances, and TeV gravity

TL;DR

This paper analyzes how short-distance physics affects black hole radiation spectra, showing that deviations from thermality occur in mini black holes within TeV gravity models, even before reaching the Planck scale.

Contribution

It provides a quantitative estimate of short-distance contributions to black hole radiation spectra using two-point functions, highlighting deviations in TeV gravity scenarios.

Findings

Thermality is maintained for black holes with ppa l_P <<1.

Deviations from the Planckian spectrum occur in mini black holes in TeV gravity.

Short-distance effects significantly influence black hole radiation in certain models.

Abstract

Using a derivation of black hole radiance in terms of two-point functions one can provide a quantitative estimate of the contribution of short distances to the spectrum. Thermality is preserved for black holes with $\kappa l_P <<1$. However, deviations from the Planckian spectrum can be found for mini black holes in TeV gravity scenarios, even before reaching the Planck phase.