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dc.contributor.authorFerreira, L. A. [UNESP]
dc.contributor.authorMiramontes, J. Luis
dc.contributor.authorGuillén, Joaquín Sánchez
dc.identifier.citationNuclear Physics B, v. 449, n. 3, p. 631-679, 1995.
dc.description.abstractWe consider the Hamiltonian reduction of the two-loop Wess-Zumino-Novikov-Witten model (WZNW) based on an untwisted affine Kac-Moody algebra script Ĝ. The resulting reduced models, called Generalized Non-Abelian Conformal Affine Toda (G-CAT), are conformally invariant and a wide class of them possesses soliton solutions; these models constitute non-Abelian generalizations of the conformal affine Toda models. Their general solution is constructed by the Leznov-Saveliev method. Moreover, the dressing transformations leading to the solutions in the orbit of the vacuum are considered in detail, as well as the τ-functions, which are defined for any integrable highest weight representation of script Ĝ, irrespectively of its particular realization. When the conformal symmetry is spontaneously broken, the G-CAT model becomes a generalized affine Toda model, whose soliton solutions are constructed. Their masses are obtained exploring the spontaneous breakdown of the conformal symmetry, and their relation to the fundamental particle masses is discussed. We also introduce what we call the two-loop Virasoro algebra, describing extended symmetries of the two-loop WZNW models.en
dc.relation.ispartofNuclear Physics B
dc.titleSolitons, τ-functions and hamiltonian reduction for non-Abelian conformal affine Toda theoriesen
dc.contributor.institutionUniversidad de Santiago
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.description.affiliationDepto. de Fis. de Partículas Facultad de Física Universidad de Santiago, E-15706 Santiago de Compostela
dc.description.affiliationInst. de Fis. Teórica IFT-UNESP, São Paulo-SP
dc.description.affiliationUnespInst. de Fis. Teórica IFT-UNESP, São Paulo-SP
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unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Física Teórica (IFT), São Paulopt
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