Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1993-09-14
Physics
High Energy Physics
High Energy Physics - Theory
65 pages. To appear in Selecta Mathematica. The introduction is substantially expanded, references are updated, and a few misp
Scientific paper
This is the first part in a series of papers developing a tensor product theory for modules for a vertex operator algebra. The goal of this theory is to construct a ``vertex tensor category'' structure on the category of modules for a suitable vertex operator algebra. The notion of vertex tensor category is essentially a ``complex analogue'' of the notion of symmetric tensor category, and in fact a vertex tensor category produces a braided tensor category in a natural way. The theory applies in particular to many familiar ``rational'' vertex operator algebras, including those associated with WZNW models, minimal models and the moonshine module. In this paper (Part I), we introduce the notions of $P(z)$- and $Q(z)$-tensor product, where $P(z)$ and $Q(z)$ are two special elements of the moduli space of spheres with punctures and local coordinates, and we present the fundamental properties and constructions of $Q(z)$-tensor products.
Huang Yi-Zhi
Lepowsky James
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