On the realization of WIMPflation
Abstract
We consider models for inflation with a stable inflaton. Reheating is achieved through scattering processes such as ϕϕ→ h h, where h is the Standard Model Higgs boson. We consider the reheating process in detail and show that for a relatively large coupling (needed for the late annihilations of the inflaton during freeze-out), reheating is almost instantaneous leading to a relatively high reheating temperature. The process ϕϕ↔ h h brings the inflaton back into equilibrium, leading to a well studied scalar singlet dark matter candidate and Higgs portal model. We argue that such models can be derived from no-scale supergravity.
- Publication:
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Journal of Cosmology and Astroparticle Physics
- Pub Date:
- October 2021
- DOI:
- 10.1088/1475-7516/2021/10/061
- arXiv:
- arXiv:2107.07472
- Bibcode:
- 2021JCAP...10..061G
- Keywords:
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- dark matter theory;
- particle physics - cosmology connection;
- cosmology of theories beyond the SM;
- inflation;
- High Energy Physics - Phenomenology
- E-Print:
- 26 pages, 3 figures