Eur. Phys. J. C (2010) 65: 281-287
https://doi.org/10.1140/epjc/s10052-009-1203-z

Regular Article - Theoretical Physics

Anomaly analysis of Hawking radiation from Kaluza–Klein black hole with squashed horizon

Institute of Theoretical Physics, Lanzhou University, Lanzhou, 730000, P.R. China

^* e-mail: liuyx@lzu.edu.cn

Received: 20 May 2009
Revised: 4 September 2009
Published online: 18 November 2009

Abstract

Considering gravitational and gauge anomalies at the horizon, a new method to derive Hawking radiation from black holes has been developed by Wilczek et al. In this paper, we apply this method to non-rotating and rotating Kaluza–Klein black holes with squashed horizon, respectively. For the rotating case, we found that, after dimensional reduction, an effective U(1) gauge field is generated by an angular isometry. The results show that the gauge current and energy-momentum tensor fluxes are exactly equivalent to Hawking radiation from the event horizon.