Transport theory beyond binary collisions
M. E. Carrington, Stanisław Mrówczyński
Using the Schwinger-Keldysh technique, we derive the transport equations for a system of quantum scalar fields. We first discuss the general structure of the equations and then their collision terms. Taking into account up to three-loop diagrams in ${\ensuremath{\phi}}^{3}$ model and up to four-loop diagrams in ${\ensuremath{\phi}}^{4}$ model, we obtain transport equations which include the contributions of multiparticle collisions and particle production processes, in addition to mean-field effects and binary interactions.
arXiv:hep-ph/0406097•Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields•Mar 21, 2005•24 citations