Journal
JOURNAL OF NONLINEAR MATHEMATICAL PHYSICS
Volume 15, Issue -, Pages 209-219Publisher
ATLANTIS PRESS
DOI: 10.2991/jnmp.2008.15.s3.21
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Recently using a Madelung fluid description a connection between envelope-like solutions of NLS-type equations and soliton-like solutions of KdV-type equations was found and investigated by R. Fedele et al. (2002). A similar discussion is given for the class of derivative NLS-type equations. For a motion with stationary profile current velocity the fluid density satisfies generalized stationary Gardner equation, and solitary wave solutions are found. For the completely integrable cases these are compared with existing solutions in literature.
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