Study of the preheating phase of chaotic inflation

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dc.creatorAnderson, Paul R.
dc.creatorMolina-Paris, Carmen
dc.creatorEvanich, David
dc.creatorCook, Gregory B.
dc.date2008-01-04
dc.date2008-10-14
dc.date.accessioned2026-07-07T10:16:07Z
dc.date.available2026-07-07T10:16:07Z
dc.descriptionParticle production and its effects on the inflaton field are investigated during the preheating phase of chaotic inflation using a model consisting of a massive scalar inflaton field coupled to N massless quantum scalar fields. The effects of spacetime curvature and interactions between the quantum fields are ignored. A large N expansion is used to obtain a coupled set of equations including a backreaction equation for the classical inflaton field. Previous studies of preheating using these equations have been done. Here the first numerical solutions to the full set of equations are obtained for various values of the coupling constant and the initial amplitude of the inflaton field. States are chosen so that initially the backreaction effects on the inflaton field are small and the mode equations for the quantum fields take the form of Mathieu equations. Potential problems relating to the parametric amplification of certain modes of the quantum fields are identified and resolved. A detailed study of the damping of the inflaton field is undertaken. Some predictions of previous studies are verified and some new results are obtained.
dc.descriptionPRD version, some changes and corrections, 37 pages, 10 figures
dc.identifierhttps://arxiv.org/abs/0801.0730
dc.identifierhttp://arxiv.org/abs/0801.0730
dc.identifierPhys.Rev.D78:083514,2008
dc.identifierdoi:10.1103/PhysRevD.78.083514
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/173399
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectHigh Energy Physics - Theory
dc.titleStudy of the preheating phase of chaotic inflation
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