Primordial trispectrum from inflation

Simple item page
dc.creatorByrnes, Christian T.
dc.creatorSasaki, Misao
dc.creatorWands, David
dc.date2006-11-02
dc.date2006-12-21
dc.date.accessioned2026-07-07T10:40:44Z
dc.date.available2026-07-07T10:40:44Z
dc.descriptionWe use the delta N-formalism to describe the leading order contributions to the primordial power spectrum, bispectrum and trispectrum in multiple-field models of inflation at leading order in a perturbative expansion. In slow-roll models where the initial field fluctuations at Hubble-exit are nearly Gaussian, any detectable non-Gaussianity is expected to come from super-Hubble evolution. We show that the contribution to the primordial trispectrum can be described by two non-linearity parameters, tau_{NL} and g_{NL}, which are dependent upon the second and third derivatives of the local expansion with respect to the field values during inflation.
dc.description9 pages, no figures, v2: references added, minor changes, matches version to be published in Phys. Rev. D
dc.identifierhttps://arxiv.org/abs/astro-ph/0611075
dc.identifierhttp://arxiv.org/abs/astro-ph/0611075
dc.identifierPhys.Rev.D74:123519,2006
dc.identifierdoi:10.1103/PhysRevD.74.123519
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/181419
dc.subjectAstrophysics
dc.titlePrimordial trispectrum from inflation
dc.typetext

Files

Collections

arXiv