Dimensionally Regulated Graviton 1-Point Function in de Sitter

N. C. Tsamis (University of Crete); R. P. Woodard (University of Florida)

arxiv: gr-qc/0506056 · v2 · submitted 2005-06-09 · 🌀 gr-qc · astro-ph· hep-ph

Dimensionally Regulated Graviton 1-Point Function in de Sitter

N. C. Tsamis (University of Crete) , R. P. Woodard (University of Florida) This is my paper

classification 🌀 gr-qc astro-phhep-ph

keywords constantfunctionorderpointsitterbackgroundcomputationscompute

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We use dimensional regularization to compute the 1PI 1-point function of quantum gravity at one loop order in a locally de Sitter background. As with other computations, the result is a finite constant at this order. It corresponds to a small positive renormalization of the cosmological constant.

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Graviton propagator in de Sitter space in a simple one-parameter gauge
gr-qc 2025-11 unverdicted novelty 5.0

Derives a relatively simple graviton propagator in de Sitter space for a one-parameter family of non-covariant gauges to enable gauge-dependence checks in loop computations.