Persistence of black holes through a cosmological bounce

TL;DR

This paper explores the possibility that black holes could survive a cosmological bounce, examining their mass range, observational signatures, and effects of dimensional changes during such a bounce.

Contribution

It provides a theoretical analysis of black hole persistence through a cosmological bounce, including observational and dimensional considerations.

Findings

Black holes may survive a cosmological bounce within certain mass ranges.

Distinct observational signatures could differentiate black holes formed before and after the bounce.

Dimensional changes during the bounce could influence black hole properties and evolution.

Abstract

We discuss whether black holes could persist in a universe which recollapses and then bounces into a new expansion phase. Whether the bounce is of classical or quantum gravitational origin, such cosmological models are of great current interest. In particular, we investigate the mass range in which black holes might survive a bounce and ways of differentiating observationally between black holes formed just after and just before the last bounce. We also discuss the consequences of the universe going through a sequence of dimensional changes as it passes through a bounce.