Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2000-05-05
J.Phys.G27:1869-1904,2001
Physics
High Energy Physics
High Energy Physics - Phenomenology
41, LaTeX, minor changes, identical to published version
Scientific paper
10.1088/0954-3899/27/9/302
Within the framework of the semiclassical approximation, we derive the Boltzmann equation describing the dynamics of colorless plasmons in a hot QCD plasma. The probability of the plasmon-plasmon scattering at the leading order in the coupling constant is obtained. This probability is gauge-independent at least in the class of the covariant and temporal gauges. It is noted that the structure of the scattering kernel possesses important qualitative difference from the corresponding one in the Abelian plasma, in spite of the fact that we focused our study on the colorless soft excitations. It is shown that four-plasmon decay is suppressed by the power of $g$ relative to the process of nonlinear scattering of plasmons by thermal particles at the soft momentum scale. It is stated that the former process becomes important in going to the ultrasoft region of the momentum scale.
Markov Yu. A.
Markova Margaret A.
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