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W and Higgs particle distributions during electroweak tachyonic preheating

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arxiv hep-ph/0307094 v1 pith:TYKKBGSF submitted 2003-07-07 hep-ph hep-lat

classification hep-phhep-lat
keywords higgsdistributionsduringelectroweakquasi-particletachyonictransitionapproximating
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We study out-of-equilibrium quasi-particle distributions of the Higgs and W fields during the zero-temperature tachyonic electroweak transition that has been assumed in recent scenarios of baryogenesis. Approximating the process by a fast quench, we perform classical real-time lattice simulations in the SU(2)-Higgs model. The emerging quasi-particle numbers and energies are then used to determine the effective temperatures, chemical potentials and masses of the particles shortly after the transition.

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