Gravitational anomalies, Hawking radiation, and spherically symmetric black holes
Vagenas, Elias C.
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.
Sherpa Romeo green journal. Open access article. Creative Commons Attribution License (CC BY 4.0) applies
Gravitational anomaly , Schwarzschild , Vaidya metric , Black holes , Black holes in string theory , Space-time symmetries , Anomalies in field and string theory , Black holes
Vagenas, E. C., & Das, S. (2006). Gravitational anomalies, Hawking radiation, and spherically symmetric black holes. Journal of High Energy Physics, 2006(10), 025. https://doi.org/10.1088/1126-6708/2006/10/025