Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1995-02-16
Nucl.Phys.B447:317-339,1995
Physics
High Energy Physics
High Energy Physics - Phenomenology
22 pages, 9 figures (as .uu files), ps file available by anonymous ftp at ftp://x4u2.desy.de/pub/preprints/desy/1995/desy95-02
Scientific paper
10.1016/0550-3213(95)00254-P
We discuss several general aspects of the free energy of the standard model at high temperatures. In particular the Clausius-Clapeyron equation is shown to yield a relation between the latent heat and the jump in the order parameter. The free energy is calculated as function of temperature in resummed perturbation theory to two-loop order. A new resummation procedure is proposed in which the symmetric phase and the Higgs phase are treated differently. A quantitative description of the phase transition is achieved for Higgs masses below $\sim 70$ GeV. The results are found to be in agreement with recent numerical simulations on large lattices. The phase transition provides no evidence for strong non-perturbative effects in the symmetric phase.
Buchmüller Wilfried
Fodor Zoltan
Hebecker Arthur
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