Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1998-10-01
Physics
High Energy Physics
High Energy Physics - Theory
Latex, 20 pages
Scientific paper
The problem of the classification of the extensions of the Virasoro algebra is discussed. It is shown that all $H$-reduced $\hat{\cal G}_{r}$-current algebras belong to one of the following basic algebraic structures: local quadratic $W$-algebras, rational $U$-algebras, nonlocal $V$-algebras, nonlocal quadratic $WV$-algebras and rational nonlocal $UV$-algebras. The main new features of the quantum $V$-algebras and their heighest weight representations are demonstrated on the example of the quantum $V_{3}^{(1,1)}$-algebra.
da Silveira E. Mendonça F.
Gomes J. F.
Sotkov G. M.
Zimerman A. H.
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