# Quantum fluctuating geometries and the information paradox II

## TL;DR

This paper refines previous models of quantum fluctuations in collapsing shells, revealing significant non-thermal radiation effects that impact the black hole information paradox and suggest faster evaporation times.

## Contribution

It introduces more accurate calculations of quantum corrections to Hawking radiation, accounting for previously neglected effects and showing larger non-thermal contributions.

## Key findings

- Non-thermal radiation is more significant than previously estimated.
- A frequency-dependent cutoff scale for thermal emission is identified.
- Black hole evaporation may occur faster than standard Hawking predictions.

## Abstract

In a previous paper we discussed corrections to Hawking radiation from a collapsing shell due to quantum fluctuations of the shell and the resulting horizon. For the computation of the quantum corrections we used several approximations. In this paper we take into account effects that were neglected in the previous one. We find important corrections including non-thermal contributions to the radiation at high frequencies and a frequency dependent time scale at which the emission of thermal radiation of frequency $\omega$ cuts off. Such scale tends to infinity in the limit of a classical shell. The fact that one has almost from the outset non-thermal radiation has significant implications for the information paradox. In particular the amount of non-thermality is considerably larger than what we had estimated before. A naive estimate of the evaporation time leads to a much faster evaporation than in the usual Hawking analysis.