A Diagrammatic Approach to Scalar Field Correlators during Inflation

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dc.creatorPetri, G.
dc.date2008-10-18
dc.date2008-10-21
dc.date.accessioned2026-07-07T10:11:33Z
dc.date.available2026-07-07T10:11:33Z
dc.descriptionWe consider a self-interacting scalar field in a de Sitter background and deal with the associated infrared divergences in a purely diagrammatic way using the in-in formalism. In the particular case of a large N O(N) invariant scalar field theory with quartic self-interactions we recover the result that the connected four-point correlation function, which is a signal of non-Gaussianity, is non-perturbatively enhanced with respect to its tree-level value.
dc.description10 pages, 7 figures, acknoledgments added
dc.identifierhttps://arxiv.org/abs/0810.3330
dc.identifierhttp://arxiv.org/abs/0810.3330
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/171894
dc.subjectGeneral Relativity and Quantum Cosmology
dc.titleA Diagrammatic Approach to Scalar Field Correlators during Inflation
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