Sphalerons, small fluctuations, and baryon-number violation in electroweak theory

Details Sphalerons, small fluctuations, and baryon-number violation in electroweak theory Sphalerons, small fluctuations, and baryon-number violation in electroweak theory

Jul 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987phrvd..36..581a&link_type=abstract

Physical Review D (Particles and Fields), Volume 36, Issue 2, 15 July 1987, pp.581-595

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Applications Of Electroweak Models To Specific Processes, Classical And Semiclassical Techniques, Particle-Theory And Field-Theory Models Of The Early Universe

Scientific paper

We study the formalism of the sphaleron approximation to baryon-number violation in the standard model at temperatures near 1 TeV. We investigate small fluctuations of the sphaleron, the competition of large-scale sphalerons with thermal fluctuations, and the damping of the transition rate in the plasma. We find a suppression of the rate due to Landau damping and due to factors arising from zero modes. Our approximations are valid in the regime 2MW(T)<

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