272 research outputs found
Constructing a Supersymmetric Integrable System from the Hirota Method in Superspace
An N=1 supersymmetric system is constructed and its integrability is shown by
obtaining three soliton solutions for it using the supersymmetric version of
Hirota's direct method.Comment: 10 pages, no figure
Exact Localized Solutions of Quintic Discrete Nonlinear Schr\"odinger Equation
We study a new quintic discrete nonlinear Schr\"odinger (QDNLS) equation
which reduces naturally to an interesting symmetric difference equation of the
form . Integrability of the symmetric mapping
is checked by singularity confinement criteria and growth properties. Some new
exact localized solutions for integrable cases are presented for certain sets
of parameters. Although these exact localized solutions represent only a small
subset of the large variety of possible solutions admitted by the QDNLS
equation, those solutions presented here are the first example of exact
localized solutions of the QDNLS equation. We also find chaotic behavior for
certain parameters of nonintegrable case.Comment: 12 pages,4 figures(eps files),revised,Physics Letters A, In pres
A new integrable generalization of the Korteweg - de Vries equation
A new integrable sixth-order nonlinear wave equation is discovered by means
of the Painleve analysis, which is equivalent to the Korteweg - de Vries
equation with a source. A Lax representation and a Backlund self-transformation
are found of the new equation, and its travelling wave solutions and
generalized symmetries are studied.Comment: 13 pages, 2 figure
On reductions of some KdV-type systems and their link to the quartic He'non-Heiles Hamiltonian
A few 2+1-dimensional equations belonging to the KP and modified KP
hierarchies are shown to be sufficient to provide a unified picture of all the
integrable cases of the cubic and quartic H\'enon-Heiles Hamiltonians.Comment: 12 pages, 3 figures, NATO ARW, 15-19 september 2002, Elb
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