The zero-curvature representation for nonlinear O(3) sigma-model

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We consider O(3) sigma-model as a reduction of the principal chiral field. This approach allows to introduce the currents with ultralocal Poisson brackets and to obtain the zero-curvature equation which admits the fundamental Poisson bracket.
Uppsala University preprint, 12 pages, LaTeX file

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High Energy Physics - Theory

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http://salesiana.dossiersoluciones.com/handle/123456789/97275

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/hep-th/9403101
 http://arxiv.org/abs/hep-th/9403101
 J.Math.Sci. 85 (1994) 1619-1628; Zap.Nauchn.Semin. 215 (1994) 100-114

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