Two-loop dimensional reduction and effective potential without temperature expansions

M. Laine, M. Losada

Research output: Contribution to journalArticlepeer-review


In many extensions of the Standard Model, finite temperature computations are complicated by a hierarchy of zero temperature mass scales, in addition to the usual thermal mass scales. We extend the standard thermal resummations to such a situation, and discuss the 2-loop computations of the Higgs effective potential, and an effective 3d field theory for the electroweak phase transition, without carrying out high or low temperature expansions for the heavy masses. We also estimate the accuracy of the temperature expansions previously used for the MSSM electroweak phase transition in the presence of a heavy left-handed stop. We find that the low temperature limit of dealing with the left-handed stop is accurate up to surprisingly high temperatures.

Original languageEnglish (US)
Pages (from-to)277-295
Number of pages19
JournalNuclear Physics B
Issue number1-3
StatePublished - Aug 28 2000


  • 11.10.Wx
  • 11.15.Ex
  • 11.30.Fs
  • 12.60.Jv
  • 98.80.Cq
  • Baryogenesis
  • Cosmology
  • Finite temperature
  • Supersymmetry
  • Symmetry breaking

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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