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Preheating a bouncing universe

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arxiv 1105.4286 v1 pith:PQIHN7TZ submitted 2011-05-21 hep-th astro-ph.COgr-qchep-ph

Yi-Fu Cai , Robert Brandenberger , Xinmin Zhang This is my paper · ORCID
classification hep-thastro-ph.COgr-qchep-ph
keywords preheatingbouncingcosmologycouplingprocessbouncecurvatonfield
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Preheating describes the stage of rapidly depositing the energy of cosmological scalar field into excitations of other light fields. This stage is characterized by exponential particle production due to the parametric resonance. We study this process in the frame of matter bounce cosmology. Our results show that the preheating process in bouncing cosmology is even more efficient than that in inflationary cosmology. In the limit of weak coupling, the period of preheating is doubled. For the case of normal coupling, the back-reaction of light fields can lead to thermalization before the bouncing point. The scenario of matter bounce curvaton could be tightly constrained due to a large coupling coefficient if the curvaton field is expected to preheat the universe directly. However, this concern can be greatly relaxed through the process of geometric preheating.

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Cited by 3 Pith papers

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

  1. Holographic bounce

    gr-qc 2019-08 conditional novelty 6.0 of 10

    Holographic infrared and ultraviolet cutoffs can produce bouncing solutions, including nonsingular ones, and can be designed to reproduce F(R) gravity bounce.

  2. Primordial black holes from sound speed resonance in the inflaton-curvaton mixed scenario

    astro-ph.CO 2019-08 conditional novelty 5.0 of 10

    Primordial black holes with a narrow mass spectrum can form from parametric resonance in the curvaton sector of an inflaton-curvaton model, possibly providing a dark matter candidate.

  3. Modified Gravity Theories on a Nutshell: Inflation, Bounce and Late-time Evolution

    gr-qc 2017-05 accept novelty 2.0 of 10

    Modified gravity theories supply viable mathematical frameworks for inflation, bounces, and dark energy eras that match observational data.

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