engleski

A photon propagator on de Sitter in covariant gauges

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 stressenergy tensor, strongly suggesting that it is suitable for perturbative calculations on de Sitter.

de Sitter space ; photon propagator ; general covariant gauge

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