B-branes and the Derived Category

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 ${\mathrm{Spin}}^c$ structure of its support in describing physical branes.

Talk at QTS3, 10 pages, uses ws-procs9x6.cls

References in corpus (6)

• D-branes, open string vertex operators, and Ext groups
• Stability conditions on triangulated categories
• Lectures on D-branes and Sheaves
• D-branes, B fields, and Ext groups
• D-branes, orbifolds, and Ext groups
• Stability data and t-structures on a triangulated category