On the realization of WIMPflation

Marcos A.G. Garcia, Yann Mambrini, Keith A. Olive, Sarunas Verner

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


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 languageEnglish (US)
Article number061
JournalJournal of Cosmology and Astroparticle Physics
Issue number10
StatePublished - Oct 2021

Bibliographical note

Publisher Copyright:
© 2021 IOP Publishing Ltd and Sissa Medialab.


  • cosmology of theories beyond the SM
  • dark matter theory
  • inflation
  • particle physics - cosmology connection


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