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Reheating in the Presence of Noise

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arxiv hep-ph/9709273 v1 pith:2FKK3F6W submitted 1997-09-07 hep-ph astro-ph

V. Zanchin , A. Maia Jr. , W. Craig , R. Brandenberger (Brown Univ.) This is my paper · ORCID
classification hep-phastro-ph
keywords noiseequationevolutionfieldsinflatonmassmatterparametric
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Explosive particle production due to parametric resonance is a crucial feature of reheating in inflationary cosmology. Coherent oscillations of the inflaton field act as a periodically varying mass in the evolution equation for matter fields which couple to the inflaton. This in turn results in the parametric resonance instability. Thermal and quantum noise will lead to a nonperiodic perturbation in the mass. We study the resulting equation for the evolution of matter fields and demonstrate that noise (at least if it is temporally uncorrelated) will increase the rate of particle production. We also estimate the limits on the magnitude of the noise for which the resonant behavior is qualitatively unchanged.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Global Asymptotics, the Swampland Conjectures, and Preheating of String Moduli

    hep-th 2026-07 conditional novelty 5.0 of 10

    Global asymptotic shape, not just local curvature, controls tachyonic self-resonant preheating of string moduli, and stochastic light-tower effects mostly smear existing resonance bands.

  2. Fluctuations in Hill's equation parameters and application to cosmic reheating

    astro-ph.CO 2025-07 conditional novelty 5.0 of 10

    Stochastic fluctuations in the Hill's equation parameters generate nonzero particle production in otherwise stable regimes, broadening the parameter space where cosmic reheating can succeed.

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