Fast radio bursts and the stochastic lifetime of black holes in quantum gravity

TL;DR

This paper explores how quantum gravity-induced black hole transitions could produce signals matching fast radio bursts, depending on the primordial black hole mass spectrum, with implications for observational predictions.

Contribution

It introduces the stochastic nature of black hole bounce times into the hypothesis linking black holes to fast radio bursts, providing new testable predictions.

Findings

Primordial black hole mass spectrum influences the radio burst signals.

Peaked mass spectrum can produce signals matching observed wavelengths.

Sensitivity to the mass spectrum shape affects the predicted signals.

Abstract

Non-perturbative quantum gravity effects might allow a black-to-white hole transition. We revisit this increasingly popular hypothesis by taking into account the fundamentally random nature of the bouncing time. We show that if the primordial mass spectrum of black holes is highly peaked, the expected signal can in fact match the wavelength of the observed fast radio bursts. On the other hand, if the primordial mass spectrum is wide and smooth, clear predictions are suggested and the sensitivity to the shape of the spectrum is studied.