Trace anomaly and evaporation of spherical black holes

TL;DR

This paper explores how the trace anomaly of a conformally coupled scalar field influences the evaporation process of spherical black holes within a semiclassical gravity framework, providing insights into quantum effects in black hole physics.

Contribution

It demonstrates the role of the trace anomaly as a source term in black hole evaporation, offering a novel perspective on quantum field effects in curved spacetime.

Findings

Trace anomaly acts as a source for black hole evaporation.

Quantum field effects significantly influence black hole dynamics.

The study enhances understanding of semiclassical gravity in black hole physics.

Abstract

The evaporation of four-dimensional spherically symmetric black holes is presented in the framework of quantum field theory in curved spacetimes and semiclassical gravity. It is discussed how the evaporation process can be sourced by the presence of the trace anomaly of a massless, conformally coupled scalar field outside the apparent horizon of the black hole.