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B-branes and the Derived Category

Sheldon Katz

hep-tharXiv:hep-th/0402059

Abstract

By a direct CFT computation, the spectrum of the topological B-model is compared to Ext groups of sheaves. A match can only be made if abstract vector bundles on holomorphic submanifolds are twisted by the canonical Spinc structure of its support in describing physical branes.

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