Journal
PHYSICS LETTERS A
Volume 372, Issue 10, Pages 1612-1618Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physleta.2007.10.015
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With the aid of symbolic computation, we demonstrate that the known method which is based on the new generalized hyperbolic functions and the new kinds of generalized hyperbolic function transformations, generates classes of exact solutions to a system of coupled nonlinear Schrodinger equations. This system includes the modified Hubbard model and the system of coupled nonlinear Schrodinger derived by Lazarides and Tsironis. Four types of solutions for this system are given explicitly, namely: new bright-bright, new dark-dark, new bright-dark and new dark-bright solitons. (C) 2007 Published by Elsevier B.V.
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