Higher Grading Generalisations of the Toda Systems

Abstract

In the present paper we obtain some integrable generalisations of the Toda system generated by flat connection forms taking values in higher $\mathbf{Z}$--grading subspaces of a simple Lie algebra, and construct their general solutions. One may think of our systems as describing some new fields of the matter type coupled to the standard Toda systems. This is of special interest in nonabelian Toda theories where the latter involve black hole target space metrics. We also give a derivation of our conformal system on the base of the Hamiltonian reduction of the WZNW model; and discuss a relation between abelian and nonabelian systems generated by a gauge transformation that maps the first grading description to the second. The latter involves grades larger than one.

24 pages, latex, no figures; Expanded version accepted for publication in Nuclear Physics B

References in corpus (4)

• Classically integrable boundary conditions for affine Toda field theories
• Affine Toda Systems Coupled to Matter Fields
• Solitons, Tau-functions and Hamiltonian Reduction for Non-Abelian Conformal Affine Toda Theories
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