Remarks on A-branes, Mirror Symmetry, and the Fukaya category

Abstract

We discuss D-branes of the topological A-model (A-branes), which are believed to be closely related to the Fukaya category. We give string theory arguments which show that A-branes are not necessarily Lagrangian submanifolds in the Calabi-Yau: more general coisotropic branes are also allowed, if the line bundle on the brane is not flat. We show that a coisotropic A-brane has a natural structure of a foliated manifold with a transverse holomorphic structure. We argue that the Fukaya category must be enlarged with such objects for the Homological Mirror Symmetry conjecture to be true.

20 pages, latex

References in corpus (2)

• Derived Categories and Zero-Brane Stability
• Enhanced D-Brane Categories from String Field Theory

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