Nonlinear Sciences – Exactly Solvable and Integrable Systems
Scientific paper
2004-03-23
Nonlinear Sciences
Exactly Solvable and Integrable Systems
16 pages, no figures, submitted to Journal of Physics A
Scientific paper
10.1088/0305-4470/37/31/008
Using special quasigraded Lie algebras we obtain new hierarchies of integrable nonlinear vector equations admitting zero-curvature representations. Among them the most interesting is extension of the generalized Landau-Lifshitz hierarchy which we call "doubled" generalized Landau-Lifshiz hierarchy. This hierarchy can be also interpreted as an anisotropic vector generalization of "modified" Sine-Gordon hierarchy or as a very special vector generalization of so(3) anisotropic chiral field hierarchy.
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