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arXiv · 2109.13280

Freeze-in from Preheating

Marcos A. G. Garcia·Kunio Kaneta·Yann Mambrini·Keith A. Olive·Sarunas Verner
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Abstract

We consider the production of dark matter during the process of reheating after inflation. The relic density of dark matter from freeze-in depends on both the energy density and energy distribution of the inflaton scattering or decay products composing the radiation bath. We compare the perturbative and non-perturbative calculations of the energy density in radiation. We also consider the (likely) possibility that the final state scalar products are unstable. Assuming either thermal or non-thermal energy distribution functions, we compare the resulting relic density based on these different approaches. We show that the present-day cold dark matter density can be obtained through freeze-in from preheating for a large range of dark matter masses.

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Marcos A. G. Garcia, Kunio Kaneta, Yann Mambrini, Keith A. Olive, Sarunas Verner. 2021-09-27. Freeze-in from Preheating. https://doi.org/10.1088/1475-7516%2F2022%2F03%2F016

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