Embedded solitons in Lagrangian and semi-Lagrangian systems
نویسندگان
چکیده
منابع مشابه
Embedded Solitons in Lagrangian and Semi-Lagrangian Systems
We develop the technique of the variational approximation for solitons in two directions. First, one may have a physical model which does not admit the usual Lagrangian representation, as some terms can be discarded for various reasons. For instance, the second-harmonic-generation (SHG) model considered here, which includes the Kerr nonlinearity, lacks the usual Lagrangian representation if one...
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ژورنال
عنوان ژورنال: Physica D: Nonlinear Phenomena
سال: 2003
ISSN: 0167-2789
DOI: 10.1016/s0167-2789(03)00219-7