Hawking Radiation, Gravitational Anomaly and Conformal Symmetry - the Origin of Universality -

TL;DR

This paper explains the universal nature of Hawking radiation by linking it to conformal symmetries, gravitational anomalies, and flux transformations near black hole horizons.

Contribution

It introduces a novel explanation for Hawking radiation's universality based on gravitational anomalies and conformal symmetry considerations.

Findings

Hawking radiation's universality is rooted in conformal symmetries.

Gravitational anomalies play a key role in deriving Hawking fluxes.

Higher-spin generalizations extend the anomaly approach to various fluxes.

Abstract

The universal behavior of Hawking radiation is originated in the conformal symmetries of matter fields near the black hole horizon. We explain the origin of this universality based on (1) the gravitational anomaly and its higher-spin generalizations and (2) conformal transformation properties of fluxes.