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Gravitational-Wave Mediated Preheating

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arxiv 1405.4288 v2 pith:NPGCJWAW submitted 2014-05-16 gr-qc hep-phhep-th

Stephon Alexander , Sam Cormack , Antonino Marcianò , Nicolás Yunes This is my paper · ORCID
classification gr-qchep-phhep-th
keywords couplinginflatonmatterpreheatingfieldsgravitationalchern-simonsconstrained
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We propose a new preheating mechanism through the coupling of the gravitational field to both the inflaton and matter fields, without direct inflaton-matter couplings. The inflaton transfers power to the matter fields through interactions with gravitational waves, which are exponentially enhanced due to an inflation-graviton coupling. One such coupling is the product of the inflaton to the Pontryagin density, as in dynamical Chern-Simons gravity. The energy scales involved are constrained by requiring that preheating happens fast during matter domination.

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Cited by 1 Pith paper

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  1. Birefringence in fermion-attenuated gravitational wave power spectrum

    gr-qc 2025-01 conditional novelty 5.0 of 10

    Combining free-streaming fermion damping with Chern-Simons gravity yields a chiral asymmetry and oscillatory peaks and dips in the stochastic gravitational wave power spectrum.

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