Zakharov system explained

In mathematics, the Zakharov system is a system of non-linear partial differential equations, introduced by Vladimir Zakharov in 1972 to describe the propagation of Langmuir waves in an ionized plasma. The system consists of a complex field u and a real field n satisfying the equations

\begin{align} i \partial _{t} u + \nabla ^{2} u & = un\\ \Box n & = - \nabla ^{2} (|u| ^{2} )\end{align} where \Box is the d'Alembert operator.

See also

• Resonant interaction; the Zakharov equation describes non-linear resonant interactions.

References

• Zakharov, V. E. (1968). Stability of periodic waves of finite amplitude on the surface of a deep fluid. Journal of Applied Mechanics and Technical Physics, 9(2), 190-194.
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