Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1992-03-18
Nucl.Phys. B404 (1993) 427-456
Physics
High Energy Physics
High Energy Physics - Theory
36 p
Scientific paper
10.1016/0550-3213(93)90486-9
We propose to study a generalization of the Klebanov-Polyakov-Witten (KPW) construction for the algebra of observables in the $c = 1$ string model to theories with $c > 1$. We emphasize the algebraic meaning of the KPW construction for $c = 1$ related to occurrence of a {\it model} of {\it SU}(2) as original structure on the algebra of observables. The attempts to preserve this structure in generalizations naturally leads to consideration of $W$-gravities. As a first step in the study of these generalized KPW constructions we design explicitly the subsector of the space of observables in appropriate $W_G$-string theory, which forms the {\it model} of $G$ for any simply laced {\it G}. The {\it model} structure is confirmed by the fact that corresponding one-loop Kac-Rocha-Caridi $W_G$-characters for $c = r_G$ sum into a chiral (open string) $k=1$ $G$-WZW partition function.
Marshakov Andrei
Mironov Aleksej
Morozov Alexander
Olshanetsky M.
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