Particle distributions in electroweak tachyonic preheating
Abstract
We consider the outofequilibrium (quasi) particle number distributions of the Higgs and Wfields during electroweak tachyonic preheating. We model this process by a fast quench, and perform classical realtime lattice simulations in the SU(2)Higgs model in three dimensions. We discuss how to define particle numbers and effective energies using twopoint functions in Coulomb and unitary gauge, and consider some of the associated problems. After an initial exponential growth in effective particle numbers, the system stabilises, allowing us to extract effective masses, temperatures and chemical potentials for the particles.
 Publication:

Nuclear Physics B Proceedings Supplements
 Pub Date:
 March 2004
 DOI:
 10.1016/S09205632(03)027087
 arXiv:
 arXiv:heplat/0309046
 Bibcode:
 2004NuPhS.129..771S
 Keywords:

 High Energy Physics  Lattice;
 High Energy Physics  Phenomenology
 EPrint:
 3 pages, Lattice2003(higgs)