A dimension-six operator |H|^2|phi|^4 in a U(1)_D singlet extension relaxes the usual Higgs-portal and mixing-angle correlation, enabling strong first-order electroweak phase transitions driven primarily by the singlet VEV.
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A realistic Taiji-like analysis recovers an injected complex-singlet phase-transition gravitational-wave signal at relative SNR ≈ 53 with ln BF ≈ 11.6, and maps the spectrum posterior onto the Higgs cubic self-coupling deviation δκ3.
In a complex singlet model with dimension-five Yukawa couplings, current electron EDM bounds already restrict part of the parameter space where gravitational waves from CP domain wall collapse would be detectable.
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Electroweak phase transitions in a $U(1)_D$ extension of the standard model with dimension-six operators: Gravitational waves and LHC signatures
A dimension-six operator |H|^2|phi|^4 in a U(1)_D singlet extension relaxes the usual Higgs-portal and mixing-angle correlation, enabling strong first-order electroweak phase transitions driven primarily by the singlet VEV.
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Bayesian analysis of the complex singlet model with phase transition gravitational waves
A realistic Taiji-like analysis recovers an injected complex-singlet phase-transition gravitational-wave signal at relative SNR ≈ 53 with ln BF ≈ 11.6, and maps the spectrum posterior onto the Higgs cubic self-coupling deviation δκ3.
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Gravitational waves from CP domain wall collapse and electron EDM in a complex singlet model with dimension-five Yukawa interactions
In a complex singlet model with dimension-five Yukawa couplings, current electron EDM bounds already restrict part of the parameter space where gravitational waves from CP domain wall collapse would be detectable.