Hawking radiation from black holes in de Sitter spaces via covariant anomalies

Abstract

We apply the covariant anomaly cancellation method to compute the Hawking fluxes from the event and cosmic horizons of the Schwarzschild-de Sitter black hole. The derivation is new from the existing ones as we split the space in three different regions (near to and away from the event and cosmic horizons) and write down the covariant energy-momentum tensor using three step functions which covers the whole region leading elegantly to the conditions required to compute the Hawking fluxes from the event and cosmic horizons.

4 pages Latex, Accepted in General Relativity and Gravitation

References in corpus (7)

• Relationship between Hawking Radiation and Gravitational Anomalies
• Hawking Radiation from Charged Black Holes via Gauge and Gravitational Anomalies
• Hawking Radiation and Covariant Anomalies
• Anomalies and de Sitter radiation from the generic black holes in de Sitter spaces
• Hawking radiation from black holes in de Sitter spaces
• Hawking radiation in GHS and non-extremal D1-D5 blackhole via covariant anomalies
• Hawking radiation in Reissner-Nordström blackhole with a global monopole via Covariant anomalies and Effective action

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• Near horizon approximation and beyond for a two-level atom falling into a Kerr-Newman black hole