Abstract
We use the full multiple scattering expansion of the retarded self-energy to obtain the gain and loss rates present in the Kadanoff-Baym relativistic transport equation. The rates we obtain include processes with any number of particles. As a first approximation, we only consider central cuts in the self-energies, but otherwise our results are general. We specialize to the case of scalar field theory to compare with lowest order results. The main application of this work is relativistic transport theory of very dense systems, such as the quark-gluon plasma or the early universe, where multi-particle interactions are important.
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Gagnon, JS., Fillion-Gourdeau, F. & Jeon, S. All orders transport theory from the multiple scattering expansion of the self-energy: The central cuts. Acta Phys. Hung. A 27, 339–342 (2006). https://doi.org/10.1556/APH.27.2006.2-3.35
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DOI: https://doi.org/10.1556/APH.27.2006.2-3.35