Relativistic Transport Theory for Systems Containing Bound States
نویسنده
چکیده
Using a Lagrangian which contains quarks as elementary degrees of freedom and mesons as bound states, a transport formalism is developed, which allows for a dynamical transition from a quark plasma to a state, where quarks are bound into hadrons. Simultaneous transport equations for both particle species are derived in a systematic and consistent fashion. For the mesons a formalism is used which introduces off-shell corrections to the off-diagonal Green functions. It is shown that these off-shell corrections lead to the appearance of elastic quark scattering processes in the collision integral. The interference of the processes qq̄ → π and qq̄ → π → qq̄ leads to a modification of the s-channel amplitude of quark-antiquark scattering. PACS numbers: 52.25.Dg, 12.38.Mh, 25.75.-q, 12.39.Fe
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