Physics Maths Engineering
author list,
Oleg Lebedev,
Oleg Lebedev
Institution: Department of Physics and Helsinki Institute of Physics, Gustaf Hallstromin katu 2a, FI-00014
Email: info@res00.com
Jong-Hyun Yoon
Jong-Hyun Yoon
Institution: Department of Physics and Helsinki Institute of Physics, Gustaf Hallstromin katu 2a, FI-00014
Email: info@res00.com
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Doi: https://doi.org/10.48550/arXiv.2203.15808
2022-04-10We consider dark matter production during the inflation oscillation epoch. It is conceivable that renormalizable interactions between dark matter and inflation may be negligible. In this case, the leading role is played by higher dimensional operators generated by gravity and thus suppressed by the Planck scale. We focus on dim-6 operators and study the corresponding particle production in perturbative and non–perturbative regimes. We find that the dark matter production rate is dominated by non–derivative operators involving higher powers of the inflation field. Even if they appear with small Wilson coefficients, such operators can readily account for the correct dark matter abundance.