Confinement in Three Dimensions and the Electroweak Phase Transition

Details Confinement in Three Dimensions and the Electroweak Phase Transition Confinement in Three Dimensions and the Electroweak Phase Transition

1994-03-29

arxiv.org/abs/hep-ph/9403388v1

Phys.Lett. B331 (1994) 124-130

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, DESY-94-045, 4 figures can be obtained via e-mail from fodor@vxdesy.desy.de

Scientific paper

10.1016/0370-2693(94)90952-0

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 $m_H^c$. Based on a renormalization group improved effective potential we find $m_H^c\sim$ 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.

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