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arXiv · math-ph/9908015

Bi-differential calculi and integrable models

Aristophanes Dimakis·Folkert Muller-Hoissen
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Abstract

The existence of an infinite set of conserved currents in completely integrable classical models, including chiral and Toda models as well as the KP and self-dual Yang-Mills equations, is traced back to a simple construction of an infinite chain of closed (respectively, covariantly constant) 1-forms in a (gauged) bi-differential calculus. The latter consists of a differential algebra on which two differential maps act. In a gauged bi-differential calculus these maps are extended to flat covariant derivatives.

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Aristophanes Dimakis, Folkert Muller-Hoissen. 1999-11-10. Bi-differential calculi and integrable models. https://doi.org/10.1088/0305-4470%2F33%2F5%2F311

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