Gravitational collapse of quantum matter

TL;DR

This paper introduces exactly solvable models of gravitational collapse that incorporate classical and quantum scalar fields, revealing phenomena like evaporating horizons and singularity avoidance without requiring quantum gravity.

Contribution

It generalizes Oppenheimer-Snyder models to include scalar fields and null fluids, providing new insights into collapse dynamics and horizon behavior.

Findings

Models exhibit evaporating horizons.

Singularity avoidance occurs without quantum gravity.

Includes classical and quantum scalar fields as sources.

Abstract

We describe a class of exactly soluble models for gravitational collapse in spherical symmetry obtained by patching dynamical spherically symmetric exterior spacetimes with cosmological interior spacetimes. These are generalizations of the Oppenheimer-Snyder type models to include classical and quantum scalar fields as sources for the interior metric, and null fluids with pressure as sources for the exterior metric. In addition to dynamical exteriors, the models exhibit other novel features such as evaporating horizons, and singularity avoidance without quantum gravity.