In this paper we present a novel mechanism for producing the observed Dark Matter (DM) relic abundance during the First Order Phase Transition (FOPT) in the early universe. We show that the bubble expansion with ultra-relativistic velocities can lead to the abundance of DM particles with masses much larger than the scale of the transition. We study this non-thermal production mechanism in the context of a generic phase transition and the electroweak phase transition. The application of the mechanism to the Higgs portal DM as well as the signal in the Stochastic Gravitational Background are discussed. © 2021, The Author(s).
Dark Matter production from relativistic bubble walls / Azatov, Aleksandr; Vanvlasselaer, Miguel; Yin, Wen. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - 2021:3(2021), pp. 1-31. [10.1007/JHEP03(2021)288]
Dark Matter production from relativistic bubble walls
Azatov, Aleksandr
;Vanvlasselaer, Miguel
;
2021-01-01
Abstract
In this paper we present a novel mechanism for producing the observed Dark Matter (DM) relic abundance during the First Order Phase Transition (FOPT) in the early universe. We show that the bubble expansion with ultra-relativistic velocities can lead to the abundance of DM particles with masses much larger than the scale of the transition. We study this non-thermal production mechanism in the context of a generic phase transition and the electroweak phase transition. The application of the mechanism to the Higgs portal DM as well as the signal in the Stochastic Gravitational Background are discussed. © 2021, The Author(s).| File | Dimensione | Formato | |
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