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arXiv · hep-th/9811092

Effective action and Hawking radiation for dilaton coupled scalars in two dimensions

W. Kummer·D. V. Vassilevich
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Abstract

The effective one-loop action for general dilaton theories with arbitrary dilaton-dependent measure and nonminimal coupling to scalar matter is computed. As an application we determine the Hawking flux to infinity from black holes in d-dimensions. We resolve the recently resurrected problem of an apparent negative flux for nonminimally coupled scalars: For any $D \geq 4$ Black Hole the complete flux turns out to be precisely the one of minimal coupling. This result is obtained from a Christensen-Fulling type argument involving the (non-)conservation of energy-momentum. It is compared with approaches using the effective action.

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W. Kummer, D. V. Vassilevich. 1998-11-26. Effective action and Hawking radiation for dilaton coupled scalars in two dimensions. https://doi.org/10.1103/physrevd.60.084021

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