Gauge invariant treatment of the electroweak phase transition

W. Buchmüller, Z. Fodor, A. Hebecker

Research output: Contribution to journalArticlepeer-review

44 Scopus citations


We evaluate the gauge invariant effective potential for the composite field σ = 2ΦΦ in the SU(2)-Higgs model at finite temperature. Symmetric and broken phases correspond to the domains σ ≤ T2/ 3 and σ >T2/3, respectively. The effective potential increases very steeply at small values of σ. Predictions for several observables, derived from the ordinary and the gauge invariant effective potential, are compared. Good agreement is found for the critical temperature and the jump in the order parameter. The results for the latent heat differ significantly for large Higgs masses.

Original languageEnglish (US)
Pages (from-to)131-136
Number of pages6
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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