Gauge Invariance of Nonlinear Landau Damping Rate of Bose Excitations in Quark-Gluon Plasma
arXiv:hep-ph/9909505 · doi:10.1007/BF02551070
Abstract
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.
45 pages, LaTeX
References in corpus (7)
- Soft Collective Excitations in Hot Gauge Theories
- Classical Transport Theory and Hard Thermal Loops in the Quark-Gluon Plasma
- Damping rates for moving particles in hot QCD
- High Temperature Response Functions and the Non-Abelian Kubo Formula
- Energy-Momentum Tensors for the Quark-Gluon Plasma
- Gauge Dependence of the Resummed Thermal Gluon Self Energy
- Gauge Invariance of Nonlinear Landau Damping Rate of Bose Excitations in Quark-Gluon Plasma