Hawking Radiation in Trace Anomaly Free Frames

TL;DR

This paper develops a conformally invariant model in two-dimensional spacetime that demonstrates Hawking radiation can occur independently of the trace anomaly, challenging traditional assumptions about its role.

Contribution

It introduces a new dynamical model in conformal frames linking trace anomaly and cosmological constant, enabling Hawking radiation without trace anomaly dependence.

Findings

Hawking radiation can be realized without trace anomaly in specific conformal frames.

The model applies to 2D Schwarzschild-de Sitter spacetime.

Trace anomaly is not a necessary condition for Hawking radiation in these frames.

Abstract

We have used the results of renormalization of a two-dimensional quantum stress tensor to develop a conformally invariant dynamical model. The model requires the consideration of those conformal frames in which there exists a correspondence between the trace anomaly and a cosmological constant. We apply this model to a two dimensional-Schwarzschild (-de Sitter) spacetime to show that in these conformal frames one may achieve Hawking radiation without recourse to the trace anomaly .