Disformal dark matter
EntityUAM. Departamento de Física Teórica
PublisherAmerican Physical Society
10.1103/PhysRevD.103.015028Physical Review D 103.1 (2021): 015028
ISSN2470-0010 (print); 2470-0029 (online)
ProjectGobierno de España. FPA2015-65929-P; Gobierno de España. PGC2018-095161-B-I00; Gobierno de España. FPA2017-90566-REDC; info:eu-repo/grantAgreement/EC/H2020/674896/EU//ELUSIVES; info:eu-repo/grantAgreement/EC/H2020/690575/EU//InvisiblesPlus
SubjectsGravitinos; Dark Matter; Colliding Beam Accelerators; Física
Rights© 2021 authors
Esta obra está bajo una Licencia Creative Commons Atribución 4.0 Internacional.
We generalize dark matter production to a two-metric framework whereby the physical metric, which couples to the Standard Model (SM), is conformally and/or disformally related to the metric governing the gravitational dynamics. We show that this setup is naturally present in many Ultra Violet (UV) constructions, from Kähler moduli fields to tensor-portal models, and from emergent gravity to supergravity models. In this setting we study dark matter production in the early Universe resulting from both scatterings off the thermal bath and the radiative decay of the inflaton. We also take into account noninstantaneous reheating effects at the end of inflation. In this context, dark matter emerges from the production of the scalar field mediating the conformal/disformal interactions with the SM, i.e., realizing a Feebly Interacting Matter Particle (FIMP) scenario where the suppression scale of the interaction between the scalar and the SM can be taken almost as high as the Planck scale in the deep UV
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