W and Higgs particle distributions during electroweak tachyonic preheating

Physics – High Energy Physics – High Energy Physics - Phenomenology

Scientific paper

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28 pages including 17 figures

Scientific paper

10.1088/1126-6708/2003/08/045

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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