Confinement in three dimensions and the electroweak phase transition

W. Buchmüller, Z. Fodor

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13 Scopus citations


The infrared behaviour of the standard model at finite temperature is determined by the confining phase of the SU(2)-Higgs model in three dimensions. Due to the Landau singularity of the three-dimensional gauge theory the perturbative treatment of the electroweak phase transition breaks down for Higgs masses above a critical mass mHc. Based on a renormalizationgroup improved effective potential we find mHc ∼ 70 GeV. The scalar self-coupling has a Landau-type singularity also in the abelian U(1)-Higgs model, which leads to a breakdown of perturbation theory in the symmetric phase.

Original languageEnglish (US)
Pages (from-to)124-130
Number of pages7
JournalPhysics Letters B
Issue number1-2
StatePublished - Jun 30 1994

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics


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