Variational approach for the quantum Zakharov system

Details Variational approach for the quantum Zakharov system Variational approach for the quantum Zakharov system

2007-01-22

arxiv.org/abs/physics/0701253v1

Physics

Plasma Physics

6 figures

Scientific paper

10.1063/1.2722271

The quantum Zakharov system is described in terms of a Lagrangian formalism. A time-dependent Gaussian trial function approach for the envelope electric field and the low-frequency part of the density fluctuation leads to a coupled, nonlinear system of ordinary differential equations. In the semiclassic case, linear stability analysis of this dynamical system shows a destabilizing r\^ole played by quantum effects. Arbitrary value of the quantum effects are also considered, yielding the ultimate destruction of the localized, Gaussian trial solution. Numerical simulations are shown both for the semiclassic and the full quantum cases.

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