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dc.contributor.authorRizzato, Felipe Barbedopt_BR
dc.contributor.authorOliveira, Glaucius Iahnke dept_BR
dc.contributor.authorErichsen, Ronaldopt_BR
dc.date.accessioned2014-09-23T02:12:38Zpt_BR
dc.date.issued1998pt_BR
dc.identifier.issn1063-651Xpt_BR
dc.identifier.urihttp://hdl.handle.net/10183/103650pt_BR
dc.description.abstractIn the present paper we investigate the process of energy transfer in the Zakharov equations. Energy is initially injected into modes with small wave vectors. When the modulational instability threshold is exceeded, some additional modes with small wave vectors are excited and solitons are formed if one lies in a quasiintegrable regime and if the number of excited modes is large enough. These solitons are formed as a direct result of the modulational instability and in fact saturate the instability. However, use of a low-dimensional formalism based on collective variables shows that if the largest length scale of the linearly excited modes is much longer than the most unstable, these solitons may be greatly influenced as they interact with ion-acoustic waves. In those cases, full simulation of the space-time problem indicates that energy is progressively transferred to modes with very small length scales. Since we work with one spatial dimension, collapse is absent and energy transfer is due to the stochastic dynamics.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofPhysical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary. Woodbury. Vol. 57, no. 3 (Mar. 1998), p. 2776-2786pt_BR
dc.rightsOpen Accessen
dc.subjectCaospt_BR
dc.subjectInstabilidade em plasmaspt_BR
dc.subjectOndas nao-lineares em plasmaspt_BR
dc.subjectTurbulênciapt_BR
dc.subjectSolitonspt_BR
dc.subjectProcessos estocásticospt_BR
dc.titleSolitons, chaos, and energy transfer in the Zakharov equationspt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000282270pt_BR
dc.type.originEstrangeiropt_BR


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