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nlin.SI2000
Symmetrically coupled higher-order nonlinear Schroedinger equations: singularity analysis and integrability
S. Yu. Sakovich, Takayuki Tsuchida
The integrability of a system of two symmetrically coupled higher-order nonlinear Schrödinger equations with parameter coefficients is tested by means of the singularity analysis.…
nlin.SI2000
A new integrable system of symmetrically coupled derivative nonlinear Schroedinger equations via the singularity analysis
S. Yu. Sakovich, Takayuki Tsuchida
A new integrable system of two symmetrically coupled derivative nonlinear Schroedinger equations is detected by means of the singularity analysis. A nonlinear transformation is pro…
nlin.SI2000
Coupled higher-order nonlinear Schroedinger equations: a new integrable case via the singularity analysis
S. Yu. Sakovich, Takayuki Tsuchida
A new system of coupled higher-order nonlinear Schroedinger equations is proposed which passes the Painleve test for integrability well. A Lax pair and a multi-field generalization…