Integrable Extension of Nonlinear Sigma Model

Details Integrable Extension of Nonlinear Sigma Model Integrable Extension of Nonlinear Sigma Model

1998-02-05

arxiv.org/abs/hep-th/9802024v1

J.Phys. A31 (1998) L325-L330

Physics

High Energy Physics

High Energy Physics - Theory

11 pages, Latex

Scientific paper

We propose an integrable extension of nonlinear sigma model on the target space of Hermitian symmetric space (HSS). Starting from a discussion of soliton solutions of O(3) model and an integrally extended version of it, we construct general theory defined on arbitrary HSS by using the coadjoint orbit method. It is based on the exploitation of a covariantized canonical structure on HSS. This term results in an additional first-order derivative term in the equation of motion, which accommodates the zero curvature representation. Infinite conservation laws of nonlocal charges in this model are derived.

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