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Massive scalar field in de Sitter spacetime: a two-loop calculation and a comparison with the stochastic approach

Abstract We examine long-wavelength correlation functions of massive scalar fields in de Sitter spacetime. For the theory with a quartic self-interaction, the two-point function is calculated up to two loops. Comparing our results with the Hartree–Fock approximation and with the stochastic approach...

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Wedi'i Gadw mewn:
Manylion Llyfryddiaeth
Prif Awduron: Alexander Yu. Kamenshchik, Alexei A. Starobinsky, Tereza Vardanyan
Fformat: Artigo
Iaith:Inglês
Cyhoeddwyd: SpringerOpen 2022-04-01
Cyfres:European Physical Journal C: Particles and Fields
Mynediad Ar-lein:https://doi.org/10.1140/epjc/s10052-022-10295-z
Tagiau: Ychwanegu Tag
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