Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1997-09-09
Physics
High Energy Physics
High Energy Physics - Theory
28 pages, no figures, latex
Scientific paper
We establish the isomorphism between a nonlinear $\sigma$-model and the abelian gauge theory on an arbitrary curved background, which allows us to derive integrable models and the corresponding Lax representations from gauge theoretical point of view. In our approach the spectral parameter is related to the global degree of freedom associated with the conformal or Galileo transformations of the spacetime. The B$\ddot{\rm a}$cklund transformations are derived from Chern-Simons theory where the spectral parameter is defined in terms of the extract compactified space dimension coordinate.
Lin Shao-shiung
Pashaev Oktay K.
Roan Shi-shyr
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