Gauge Invariance of Nonlinear Landau Damping Rate of Bose Excitations in Quark-Gluon Plasma

Details Gauge Invariance of Nonlinear Landau Damping Rate of Bose Excitations in Quark-Gluon Plasma Gauge Invariance of Nonlinear Landau Damping Rate of Bose Excitations in Quark-Gluon Plasma

1999-09-24

arxiv.org/abs/hep-ph/9909505v1

Theor. Math. Phys. 124 (2000) 950-971; Theor. Math. Phys. 124 (2000) 1105-1120

Physics

High Energy Physics

High Energy Physics - Phenomenology

45 pages, LaTeX

Scientific paper

10.1007/BF02551070

On the basis of the approximate dynamical equations describing the behavior of quark-gluon plasma (QGP) in the semiclassical limit and Yang-Mills equation, the kinetic equation for longitudinal waves (plasmons) is obtained. With the Ward identities the gauge invariance of obtained nonlinear Landau damping rate is proved. The physical mechanisms defining nonlinear scattering of a plasmon by QGP particles are analyzed. The problem on a connection of nonlinear Landau damping rate of longitudinal oscillations with damping rate, obtained in the framework of hard thermal loops approximation, is considered. It is shown that the gauge-dependent part of nonlinear Landau damping rate for the plasmons with zero momentum vanishes on mass-shell.

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