Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1998-03-27
Physics
High Energy Physics
High Energy Physics - Theory
63 pages, latex file (run twice)
Scientific paper
We investigate a class of conformal Non-Abelian-Toda models representing a noncompact $SL(2,R)/U(1)$ parafermionions (PF) interacting with a specific abelian Toda theories and having a global U(1) symmetry. A systematic derivation of the conserved currents, their algebras and the exact solution of these models is presented. An important property of this class of models is the affine $SL(2,R)_q$ algebra spanned by charges of the chiral and antichiral nonlocal currents and the U(1) charge. The classical (Poisson Brackets) algebras of symmetries $V{G_n}$ of these models appears to be of mixed PF-$W{G_n}$ type. They contain together with the local quadratic terms specific for the $W_n$-algebras the nonlocal terms similar to the ones of the classical PF-algebra. The renormalization of the spins of the nonlocal currents is the main new feature of the quantum $V{A_n}$-algebras. The quantum $V{A_2}$-algebra and its degenerate representations are studied in detail.
Gomes J. F.
Sotkov G. M.
Zimerman A. H.
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