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.
Original language | English (US) |
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Article number | 061 |
Journal | Journal of Cosmology and Astroparticle Physics |
Volume | 2021 |
Issue number | 10 |
DOIs | |
State | Published - Oct 2021 |
Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2021 IOP Publishing Ltd and Sissa Medialab.
Keywords
- cosmology of theories beyond the SM
- dark matter theory
- inflation
- particle physics - cosmology connection