Journal
NONLINEAR DYNAMICS
Volume 81, Issue 1-2, Pages 239-247Publisher
SPRINGER
DOI: 10.1007/s11071-015-1985-5
Keywords
Generalized mixed nonlinear Schrodinger equation; Madelung fluid description; Solitary wave; Envelope soliton
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Funding
- National Natural Science Foundation of China [61308018]
- China Postdoctoral Science Foundation [2014T70031]
- Fundamental Research Funds for the Central Universities of China [2014RC019, 2015JBM111]
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Within the framework of the Madelung fluid description, in the present paper, we will derive bright and dark (including gray- and black-soliton) envelope solutions for a generalized mied nonlinear Schrodinger model i partial derivative Psi/partial derivative t = partial derivative(2)Psi/partial derivative x(2) + i a vertical bar Psi vertical bar(2) partial derivative Psi/partial derivative x + i b Psi(2) partial derivative Psi*/partial derivative x + c vertical bar Psi vertical bar(4)Psi + d vertical bar Psi vertical bar(2)Psi, by virtue of the corresponding solitary wave solutions for the generalized stationary Gardner equations. Via corresponding parametric constraints, our results are achieved under suitable assumptions for the current velocity associated with different boundary conditions of the fluid density rho, while we have only considered the motion with stationary-profile current velocity case and excluded the motion with constant current velocity case. Note that our model is a generalized one with the inclusion of multiple coefficients (a, b, c and d).
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