A Nonperturbative Measurement of the Broken Phase Sphaleron Rate
arXiv:hep-ph/9801204 · doi:10.1016/S0370-2693(98)01009-0
Abstract
We develop a method to compute the sphaleron rate in the electroweak broken phase nonperturbatively. The rate is somewhat slower than a perturbative estimate. In SU(2) X U(1) Higgs theory at the physical value of Theta_W, and assuming that the latent heat of the phase transition reheats the universe to the equilibrium temperature, baryon number erasure after the phase transition is prevented only when lambda/g^2 <= 0.036.
12 pages, 2 figures included with psfig. A few typos fixed, some points clarified
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