Hawking Radiation of Five-dimensional Charged Black Holes with Scalar Fields

Abstract

We investigate the Hawking radiation cascade from the five-dimensional charged black hole with a scalar field coupled to higher-order Euler densities in a conformally invariant manner. We give the semi-analytic calculation of greybody factors for the Hawking radiation. Our analysis shows that the Hawking radiation cascade from this five-dimensional black hole is extremely sparse. The charge enhances the sparsity of the Hawking radiation, while the conformally coupled scalar field reduces this sparsity.

v1: 11 pages, 2 figures, 2 tables; v2: 12 pages, references and clarifications added, final version to appear in Phys. Lett. B

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