Freeze-in from Preheating
arXiv:2109.13280 · doi:10.1088/1475-7516/2022/03/016
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.
39 pages, 13 figures
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- Quantum interference in gravitational particle production
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- Gravitational reheating in Starobinsky inflation
- Present and future of CosmoLattice
- Non-perturbative production of fermionic dark matter from fast preheating
- Reheating and Leptogenesis after Vector inflation
- Impact of Dark Sector Preheating on CMB Observables
- Fermion (non)reheating with a quartic inflaton potential
- AliCPT Sensitivity to Cosmic Reheating