Fluctuation-driven electroweak phase transition

Details Fluctuation-driven electroweak phase transition Fluctuation-driven electroweak phase transition

Aug 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992phrvl..69.1304g&link_type=abstract

Physical Review Letters (ISSN 0031-9007), vol. 69, no. 9, Aug. 31, 1992, p. 1304-1307. Research supported by DOE. Previously ann

Physics

52

Asymmetry, Baryons, Cosmology, Particle Production, Percolation, Phase Transformations, Universe, Vacuum, Weak Interactions (Field Theory), Critical Temperature, Quarks, Thermodynamic Equilibrium

Scientific paper

We examine the dynamics of the electroweak phase transition in the early Universe. For Higgs masses in the range 46 less than or = MH less than or = 150 GeV and top quark masses less than 200 GeV, regions of symmetric and asymmetric vacuum coexist to below the critical temperature, with thermal equilibrium between the two phases maintained by fluctuations of both phases. We propose that the transition to the asymmetric vacuum is completed by percolation of these subcritical fluctuations. Our results are relevant to scenarios of baryogenesis that invoke a weakly first-order phase transition at the electroweak scale.

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