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Composite Dynamics in the Early Universe

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arxiv 1909.07894 v2 pith:BITH44WN submitted 2019-09-17 hep-ph

Stefania De Curtis , Luigi Delle Rose , Giuliano Panico This is my paper · ORCID
classification hep-ph
keywords higgsadditionalcompositedynamicselectroweakmodelsphasescalar
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We study the occurrence of a strong first-order electroweak phase transition in composite Higgs models. Minimal constructions realising this scenario are based on the coset SO(6)/SO(5) which delivers an extended Higgs sector with an additional scalar. In such models, a two-step phase transition can be obtained with the scalar singlet acquiring a vacuum expectation value at intermediate temperatures. A bonus of the Nambu-Goldstone boson nature of the scalar-sector dynamics is the presence of non-renormalisable Higgs interactions that can trigger additional sources of CP violation needed to realise baryogenesis at the electroweak scale. Another interesting aspect of this scenario is the generation of gravitational wave signatures that can be observed at future space-based interferometers.

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Cited by 2 Pith papers

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  1. Electroweak Phase Transition and Bubble Wall Velocity in Local Thermal Equilibrium

    hep-ph 2025-04 conditional novelty 6.0 of 10

    Bubble wall velocities in local thermal equilibrium are computed for three BSM models and found to be nearly universal when expressed via the critical temperature and supercooling, with only deflagration solutions.

  2. Minimal Electroweak Baryogenesis via Domain Walls

    hep-ph 2024-12 conditional novelty 6.0 of 10

    Domain wall cores in the minimal Z2-symmetric singlet extension can restore electroweak symmetry and, while sweeping through space, could produce the matter-antimatter asymmetry in a parameter region far lighter and m...

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