P. K. Shukla, M. Marklund, L. Stenflo, “Modulational instability of nonlinearly interacting incoherent sea states”, Pis'ma v Zh. Èksper. Teoret. Fiz., 2006, Volume 84, Issue 12,Pages <nobr>764

This article is cited in 17 papers

PLASMA, GASES

Modulational instability of nonlinearly interacting incoherent sea states

P. K. Shukla^abc, M. Marklund^ab, L. Stenflo^a

^a Centre for Nonlinear Physics, Department of Physics, Umeå University, SE-901 87 Umeå, Sweden
^b Centre for Fundamental Physics, Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire, UK
^c Institut für Theoretische Physik IV and Centre for Plasma Science and Astrophysics, Ruhr-Universität Bochum, D-44780 Bochum, Germany

Abstract: The modulational instability of nonlinearly interacting spatially incoherent Stokes waves is analyzed. Starting from a pair of nonlinear Schrödinger equations, we derive a coupled set of wave-kinetic equations by using the Wigner transform technique. It is shown that the partial coherence of the interacting waves induces novel effects on the dynamics of crossing sea states.

PACS: 02.60.Cb, 47.15.Hg, 47.35.-i, 92.10.Hm

Received: 02.10.2006

Language: English