Dark matter production and reheating via direct inflaton couplings: collective effects
Oleg Lebedev,
Fedor Smirnov,
Timofey Solomko
et al.
Abstract:We study scalar dark matter production and reheating via renormalizable inflaton couplings, which include both quartic and trilinear interactions. These processes often depend crucially on collective effects such as resonances, backreaction and rescattering of the produced particles. To take them into account, we perform lattice simulations and map out parameter space producing the correct (non-thermal) dark matter density. We find that the inflaton-dark matter system can reach a quasi-equilibrium state during… Show more
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