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Gravitational waves from thermal heavy scalar dark matter
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We propose a gauge singlet scalar with mass around 1-100 TeV as a thermal heavy dark matter candidate along with a dilaton as a Higgs portal mediator in a dimensionless scalar extension of the Standard Model. We demonstrate analytically that such a model gives rise to very strong first-order electroweak phase transition through supercooling. We calculate the corresponding gravitational wave signals due to bubble collisions during the phase transition. The produced gravitational waves can be detected by future space-based gravitational wave detectors in the frequency range from 10^{-4} Hz to 0.1 Hz.
Forward citations
Cited by 2 Pith papers
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Revisiting Singlet Fermion Dark Matter with a Scalar Portal: Connecting Higgs Phenomenology and Strong Electroweak Phase Transition
In a no-VEV singlet scalar + singlet fermion dark matter extension of the SM, a strong first-order electroweak phase transition, the observed dark matter relic density, and collider/direct-detection constraints can co...
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