Effective action and Hawking radiation for dilaton coupled scalars in two dimensions
High Energy Physics - Theory
2016-08-25 v3
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 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.
Keywords
Cite
@article{arxiv.hep-th/9811092,
title = {Effective action and Hawking radiation for dilaton coupled scalars in two dimensions},
author = {W. Kummer and D. V. Vassilevich},
journal= {arXiv preprint arXiv:hep-th/9811092},
year = {2016}
}
Comments
latex, no figures, no macros, clarifying remarks on the effective action approach are added