Real time dynamics of a semiclassical gravitational collapse of a scalar quantum field

TL;DR

This paper introduces a novel numerical formalism for simulating the real-time semiclassical gravitational collapse of a scalar quantum field, maintaining unitarity and time-reversal symmetry, with initial results for s-wave states.

Contribution

The paper develops a new formalism for numerically modeling semiclassical gravitational collapse that preserves unitarity and is time-reversal invariant, advancing computational approaches in quantum gravity.

Findings

Initial results for angular momentum l=0 approximation

Formalism maintains unitarity and time-reversal symmetry

Potential for studying quantum gravitational collapse dynamics

Abstract

We present a new formalism for numerically treating the semiclassical gravitational collapse of a scalar quantum field in the radially symmetric case. Our formalism is time reversal invariant and the evolution of the scalar fields is unitary. We present some first results in the angular momentum $l=0$ approximation for an initially coherent state of a massless field and briefly discuss future prospects.