| Article | |
| Report number | arXiv:2203.02004 ; UMN--TH--4116/22 ; FTPI--MINN--22/07 ; CERN-TH-2022-025 |
| Title | Gravitational portals with nonminimal couplings |
| Related title | Gravitational Portals with Non-Minimal Couplings |
| Author(s) | Clery, Simon (IJCLab, Orsay) ; Mambrini, Yann (IJCLab, Orsay ; CERN) ; Olive, Keith A. (Minnesota U., Theor. Phys. Inst.) ; Shkerin, Andrey (Minnesota U., Theor. Phys. Inst.) ; Verner, Sarunas (Minnesota U., Theor. Phys. Inst.) |
| Publication | 2022-05-01 |
| Imprint | 2022-03-03 |
| Number of pages | 14 |
| In: | Phys. Rev. D 105 (2022) 095042 |
| DOI | 10.1103/PhysRevD.105.095042 (publication) |
| Subject category | hep-th ; Particle Physics - Theory ; astro-ph.CO ; Astrophysics and Astronomy ; hep-ph ; Particle Physics - Phenomenology |
| Abstract | 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. |
| Copyright/License | preprint: (License: CC BY 4.0) publication: © 2022-2025 authors (License: CC BY 4.0), sponsored by SCOAP³ |
Corresponding record in: Inspire
记录创建於2022-03-08，最後更新在2024-10-03
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