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The covariant graviton propagator in de Sitter spacetime
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The covariant graviton propagator in de Sitter spacetime
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We consider the covariant graviton propagator in de Sitter spacetime in a gauge with two parameters, alpha and beta, in the Euclidean approach. We give an explicit form of the propagator with a particular choice of beta but with arbitrary value of alpha. We confirm that two-point functions of local gauge-invariant quantities do not increase as the separation of the two points becomes large.
Forward citations
Cited by 2 Pith papers
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Out-of-time-ordered Correlators in de Sitter Revisited
The de Sitter OTOC grows at the maximal Lyapunov rate 2π/β at tree level and at twice that rate in a massive-graviton-regulated double-scaling limit, with the growth traced to large diffeomorphisms in the graviton propagator.
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A remarkably simple covariant graviton propagator in Anti-de Sitter spacetime
A special gauge choice (β=1, α=4(d+2)/d) yields a simple graviton propagator in (A)dS satisfying ∇^μ μ ∇^ν μ G_{μν,α'β'} = 0.
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