Dyonic integrable models

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Gomes, J. F. [UNESP]
Gueuvoghlanian, E. P. [UNESP]
Sotkov, G. M. [UNESP]
Zimerman, A. H. [UNESP]
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A class of non-abelian affine Toda models arising from the axial gauged two-loop WZW model is presented. Their zero curvature representation is constructed in terms of a graded Kac-Moody algebra. It is shown that the discrete multivacua structure of the potential together with non-abelian nature of the zero grade subalgebra allows soliton solutions with non-trivial electric and topological charges. The dressing transformation is employed to explicitly construct one and two soliton solutions and their bound states in terms of the tau functions. A discussion of the classical spectra of such solutions and the time delays are given in detail. © 2001 Elsevier Science B.V.
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Nuclear Physics B, v. 598, n. 3, p. 615-644, 2001.