The Parametric Space of the Two-Higgs-Doublet Model and Sakharov’s Baryogenesis Conditions


  • A.A. Kozhushko Oles Honchar Dnipro National University
  • V.V. Skalozub Oles Honchar Dnipro National University





The electroweak phase transition in the Two-Higgs-Doublet Model is investigated. The Gibbs potential at a finite temperature is computed with regard for the one-loop plus ring diagram contributions. The strong first-order phase transition satisfying Sakharov's baryogenesis conditions is determined for the values of scalar field masses allowed by experimental data. The relation between the model parameters supplying the phase transition to be of the first order is derived. It is shown that a sequence of phase transitions is also possible. A comparison with results of other authors is done.


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How to Cite

Kozhushko, A., & Skalozub, V. (2022). The Parametric Space of the Two-Higgs-Doublet Model and Sakharov’s Baryogenesis Conditions. Ukrainian Journal of Physics, 56(5), 431.



Fields and elementary particles