期刊
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
卷 102, 期 15, 页码 5352-5356出版社
NATL ACAD SCIENCES
DOI: 10.1073/pnas.0409901102
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Let V be a simple vertex operator algebra satisfying the following conditions: (i) V-(n) = 0 for n < 0, V-0 = C1, and the contragredient module V' is isomorphic to V as a V-module; (h) every N-gradable weak V-module is completely reducible; (iii) V is C-2-cofinite. We announce a proof of the Verlinde conjecture for V, that is, of the statement that the matrices formed by the fusion rules among irreducible V-modules are diagonalized by the matrix given by the action of the modular transformation tau -> -1/tau on the space of characters of irreducible V-modules. We discuss some consequences of the Verlinde conjecture, including the Verlinde formula for the fusion rules, a formula for the matrix given by the action of tau -> -1/tau, and the symmetry of this matrix. We also announce a proof of the rigidity and nondegeneracy property of the braided tensor category structure on the category of V-modules when V satisfies in addition the condition that irreducible V-modules not equivalent to V have no nonzero elements of weight 0. In particular, the category of V-modules has a natural structure of modular tensor category.
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