A photon propagator on de Sitter in covariant gauges
General Relativity and Quantum Cosmology
2014-01-20 v1 High Energy Physics - Theory
Abstract
We construct a de Sitter invariant photon propagator in general covariant gauges. Our result is a natural generalization of the Allen-Jacobson photon propagator in Feynman gauge. Our propagator reproduces the correct response to a point static charge and the one-loop electromagnetic stress-energy tensor, strongly suggesting that it is suitable for perturbative calculations on de Sitter.
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Cite
@article{arxiv.1401.4329,
title = {A photon propagator on de Sitter in covariant gauges},
author = {Silvije Domazet and Tomislav Prokopec},
journal= {arXiv preprint arXiv:1401.4329},
year = {2014}
}
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15 pages