Elsevier

Nuclear Physics B

Volume 324, Issue 3, 2 October 1989, Pages 581-596
Nuclear Physics B

Boundary conditions, fusion rules and the Verlinde formula

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Abstract

Boundary operators is conformal field theory are considered as arising from the juxtaposition of different types of boundary conditions. From this point of view, the operator content of the theory in an annulus may be related to the fusion rules. By considering the partition function in such a geometry, we give a simple derivation of the Verlinde formula.

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