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Study of entropy production due to electroweak phase transition in Z₂ symmetric extension of the Standard Model

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arxiv 2206.08699 v2 pith:INRTNUJO submitted 2022-06-17 hep-ph

Study of entropy production due to electroweak phase transition in Z₂ symmetric extension of the Standard Model

classification hep-ph
keywords phasetransitionelectroweakentropyextensionmodelnaturestandard
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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In this work we consider the simple $Z_2$ symmetric extension to the Standard Model (SM) and proceed to study the nature of electroweak phase transition (EWPT) in the early universe. We show that the nature of the phase transition changes from a smooth crossover in the SM to a strong first order with this addition of the real scalar. Furthermore, we show the entropy release in this scenario is higher than that of the SM. This can lead to a strong dilution of frozen out dark matter particles and baryon asymmetry, if something existed before the onset of the phase transition.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Electroweak First-Order Phase Transition Triggered by Non-Gaussian Fluctuations of a $\mathbb{Z}_2$-Symmetric Spectator Scalar

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  3. Solving Cosmological Puzzles using Finite Temperature $\nu$SMEFT

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    A minimal extension of the Standard Model with three heavy Majorana neutrinos simultaneously realizes fermionic dark matter, a strong first-order electroweak phase transition, and low-scale resonant leptogenesis consi...

  4. Revisiting Singlet Fermion Dark Matter with a Scalar Portal: Connecting Higgs Phenomenology and Strong Electroweak Phase Transition

    hep-ph 2026-01 conditional novelty 4.0

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