Noncommutative Integrable Field Theories in 2d

Details Noncommutative Integrable Field Theories in 2d Noncommutative Integrable Field Theories in 2d

2002-11-20

arxiv.org/abs/hep-th/0211193v2

Nucl.Phys. B673 (2003) 437-454

Physics

High Energy Physics

High Energy Physics - Theory

18 pages, 1 figure; v2: references added

Scientific paper

We study the noncommutative generalization of (euclidean) integrable models in two-dimensions, specifically the sine- and sinh-Gordon and the U(N) principal chiral models. By looking at tree-level amplitudes for the sinh-Gordon model we show that its na\"\i ve noncommutative generalization is {\em not} integrable. On the other hand, the addition of extra constraints, obtained through the generalization of the zero-curvature method, renders the model integrable. We construct explicit non-local non-trivial conserved charges for the U(N) principal chiral model using the Brezin-Itzykson-Zinn-Justin-Zuber method.

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