Dynamical Chaos and the Growth of Cosmological Fluctuations

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dc.creatorZibin, J. P.
dc.date2001-08-01
dc.date.accessioned2026-07-07T03:45:04Z
dc.date.available2026-07-07T03:45:04Z
dc.descriptionI demonstrate that instability in a system of homogeneous scalar fields leads to the growth of super-Hubble metric perturbations. This generalizes the result that parametric resonance can lead to the growth of cosmological perturbations. Since dynamical chaos is common in multi-field quartically coupled systems, I argue that the evolution of the fields after inflation must be examined to determine whether the amplitude of cosmological metric perturbations is underestimated in the standard inflationary calculations. I illustrate this effect with a simple hybrid inflation model.
dc.description4 pages, 2 figures, submitted to Phys. Rev. Lett
dc.identifierhttps://arxiv.org/abs/hep-ph/0108008
dc.identifierhttp://arxiv.org/abs/hep-ph/0108008
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/40807
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectAstrophysics
dc.subjectChaotic Dynamics
dc.titleDynamical Chaos and the Growth of Cosmological Fluctuations
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