Monte-Carlo approach to particle-field interactions and the kinetics of the chiral phase transition
نویسندگان
چکیده
The kinetics of the chiral phase transition is studied within a linear quark-mesonσ model, using a Monte-Carlo approach to semiclassical particle-field dynamics. The meson fields are described on the mean-field level and quarks and antiquarks as ensembles of test particles. Collisions between quarks and antiquarks as well as the qq annihilation to σ mesons and the decay of σ mesons is treated, using the corresponding transition-matrix elements from the underlying quantum field theory, obeying strictly the rule of detailed balance and energymomentum conservation. The approach allows to study fluctuations without making ad hoc assumptions concerning the statistical nature of the random process as necessary in LangevinFokker-Planck frameworks.
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تاریخ انتشار 2015