Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1997-04-09
Physics
High Energy Physics
High Energy Physics - Theory
50 pages, Latex file. Two expository sections on vertex operator algebras and intertwining operator algebras are added. A mist
Scientific paper
We prove a generalized rationality property and a new identity that we call the ``Jacobi identity'' for intertwining operator algebras. Most of the main properties of genus-zero conformal field theories, including the main properties of vertex operator algebras, modules, intertwining operators, Verlinde algebras, and fusing and braiding matrices, are incorporated into this identity. Together with associativity and commutativity for intertwining operators proved by the author in \cite{H2} and \cite{H3}, the results of the present paper solve completely the problem of finding a natural purely algebraic structure on the direct sum of all inequivalent irreducible modules for a suitable vertex operator algebra. Two equivalent definitions of intertwining operator algebra in terms of this Jacobi identity are given.
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