Gravitational Portals with Non-Minimal Couplings
| Autor: | Simon Cléry, Yann Mambrini, Keith A. Olive, Andrey Shkerin, Sarunas Verner |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
High Energy Physics - Theory
Astrophysics and Astronomy Cosmology and Nongalactic Astrophysics (astro-ph.CO) hep-th FOS: Physical sciences hep-ph Astrophysics::Cosmology and Extragalactic Astrophysics Computer Science::Digital Libraries General Relativity and Quantum Cosmology High Energy Physics - Phenomenology High Energy Physics - Phenomenology (hep-ph) High Energy Physics - Theory (hep-th) astro-ph.CO Particle Physics - Theory Particle Physics - Phenomenology Astrophysics - Cosmology and Nongalactic Astrophysics |
| Zdroj: | Physical Review |
| Popis: | We consider the effects of non-minimal couplings to curvature of the form $\xi_S S^2 R$, for three types of scalars: the Higgs boson, the inflaton, and a scalar dark matter candidate. We compute the abundance of dark matter produced by these non-minimal couplings to gravity and compare to similar results with minimal couplings. We also compute the contribution to the radiation bath during reheating. The main effect is a potential augmentation of the maximum temperature during reheating. A model independent limit of $\mathcal{O}(10^{12})$ GeV is obtained. For couplings $\xi_S \gtrsim \mathcal{O}(1)$, these dominate over minimal gravitational interactions. Comment: 14 pages, 8 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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