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Gravitational Anomalies, Hawking Radiation, and Spherically Symmetric Black Holes

Elias C. Vagenas·Saurya Das
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Abstract

Motivated by the recent work of Robinson and Wilczek, we evaluate the gravitational anomaly of a chiral scalar field in a Vaidya spacetime of arbitrary mass function, and thus the outgoing flux from the time-dependent horizon in that spacetime. We show that this flux differs from that of a perfect blackbody at a fixed temperature. When this flux is taken into account, general covariance in that spacetime is restored. We also generalize their results to the most general static, and spherically symmetric spacetime.

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Elias C. Vagenas, Saurya Das. 2006-09-20. Gravitational Anomalies, Hawking Radiation, and Spherically Symmetric Black Holes. https://doi.org/10.1088/1126-6708%2F2006%2F10%2F025

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