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arXiv · 2107.07472

On the Realization of WIMPflation

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

We consider models for inflation with a stable inflaton. Reheating is achieved through scattering processes such as $\phi \phi \to h h$, 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 $\phi \phi \leftrightarrow h h$ 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.

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Marcos A. G. Garcia, Yann Mambrini, Keith A. Olive, Sarunas Verner. 2021-07-15. On the Realization of WIMPflation. https://doi.org/10.1088/1475-7516/2021/10/061

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