Classical and quantum kinetics of the Zakharov system

Details Classical and quantum kinetics of the Zakharov system Classical and quantum kinetics of the Zakharov system

2005-07-15

arxiv.org/abs/physics/0507119v1

Phys. Plasmas 12, 082110 (2005)

Physics

Plasma Physics

15 pages, 13 figures, to appear in Phys. Plasmas

Scientific paper

10.1063/1.2012147

A kinetic theory for quantum Langmuir waves interacting nonlinearly with quantum ion-acoustic waves is derived. The formulation allows for a statistical analysis of the quantum correction to the Zakharov system. The influence of a background random phase on the modulational instability is given. In the coherent case, the effect of the quantum correction is to reduce the growth rate. Moreover, in the classical limit, a bifurcation develops in the dispersion curves due to the presence of partial coherence. However, the combined effect of partial coherence and a quantum correction may give rise to an increased modulational instability growth rate, as compared to the classical case. The results may be of significance in dense astrophysical plasmas and laboratory laser-plasma systems.

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