Unruh response functions for scalar fields in de Sitter space
General Relativity and Quantum Cosmology
2009-11-10 v2 Astrophysics
High Energy Physics - Theory
Abstract
We calculate the response functions of a freely falling Unruh detector in de Sitter space coupled to scalar fields of different coupling to the curvature, including the minimally coupled massless case. Although the responses differ strongly in the infrared as a consequence of the amplification of superhorizon modes, the energy levels of the detector are thermally populated.
Keywords
Cite
@article{arxiv.gr-qc/0404058,
title = {Unruh response functions for scalar fields in de Sitter space},
author = {Bjorn Garbrecht and Tomislav Prokopec},
journal= {arXiv preprint arXiv:gr-qc/0404058},
year = {2009}
}
Comments
16 pages, 1 figure, accepted for publication by Classical and Quantum Gravity