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Electroweak phase transition in the nearly aligned Higgs effective field theory

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arxiv 2202.12774 v2 pith:7XKHBWSK submitted 2022-02-25 hep-ph

Shinya Kanemura , Ryo Nagai , Masanori Tanaka This is my paper · ORCID
classification hep-ph
keywords phasetransitioneffectivefieldfirst-orderhiggsstronglytheory
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We investigate the strongly first-order electroweak phase transition using an effective field theoretical approach. The standard effective field theory with finite number truncation of higher dimensional operators fails in the typical parameter space where the strongly first-order phase transition is realized because it cannot describe the non-decoupling quantum effect of new physics beyond the standard model. To parameterize the non-decoupling quantum effect, we employ the nearly aligned Higgs effective theory in which the Higgs potential is parameterized by a Coleman-Weinberg like form. Extending this framework with finite temperature corrections, we study the parameter space for realizing the strongly first-order phase transition, and estimate the gravitational wave produced at the phase transition.

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Cited by 5 Pith papers

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  1. Hot news on the phase structure of the SMEFT

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    A full O(g^4) dimensional reduction of the dimension-six SMEFT shows that the top-Higgs operator O_tphi can trigger a first-order electroweak phase transition with zero (phi-dagger phi)^3 coupling at zero temperature.

  2. RGE effects on new physics searches via gravitational waves

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    Future GW experiments retain sensitivity to several SMEFT operators despite renormalization scale uncertainties, provided the leading (H†H)^3 operator is measured by colliders.

  3. Electroweak Baryogenesis: Advances in Sphaleron Rate Calculations and Implications of Thermal Phase Transitions

    hep-ph 2026-07 conditional novelty 5.0 of 10

    Sphaleron rates can be computed gauge-invariantly in 3D thermal EFT, yielding a new baryon-washout criterion x = lambda3/g3^2 that replaces v_c/T_c > 1 for electroweak baryogenesis.

  4. One Loop Thermal Effective Action

    hep-th 2024-11 reject novelty 5.0 of 10

    The paper derives a one-loop finite-temperature effective action via heat-kernel coefficients up to dimension-6 operators with Polyakov loop dependence, but the fermionic generalization rests on an invalid Matsubara i...

  5. Super-critical primordial black hole formation via delayed first-order electroweak phase transition

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    Delayed first-order electroweak phase transitions can form super-critical primordial black holes, and a timescale ratio t_H/t_V captures the threshold better than the standard density contrast.

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