Preheating in FRW Universes

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dc.creatorBoyanovsky, D.
dc.creatorCormier, D.
dc.creatorde Vega, H. J.
dc.creatorHolman, R.
dc.creatorSingh, A.
dc.creatorSrednicki, M.
dc.date1996-09-30
dc.date.accessioned2026-07-07T04:00:17Z
dc.date.available2026-07-07T04:00:17Z
dc.descriptionThe nonlinear time evolution of the quantum fields is studied in the O(N) model for large N in a radiation dominated FRW universe, with a view towards the phenomenon of explosive particle production due to either spinodal instabilities or parametric amplification, i.e. preheating. Quantum backreaction effects due to the produced particles are included consistently within the large N approximation. We find that preheating persists when the expansion is included, although the amount of particle production is reduced compared to the values found in Minkowski space. We also see that the behavior of the evolving zero mode is very different from that in Minkowski space, though the late time behavior in all cases is determined by a sum rule that implies the existence of Goldstone bosons in the final state.
dc.description6 pages, RevTex, 2 epsf figures
dc.identifierhttps://arxiv.org/abs/hep-ph/9609527
dc.identifierhttp://arxiv.org/abs/hep-ph/9609527
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/46520
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectAstrophysics
dc.titlePreheating in FRW Universes
dc.typetext

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