Mirror Symmetry for Quiver Algebroid Stacks

Abstract: In this paper, we construct noncommutative algebroid stacks and the associated mirror functors for a symplectic manifold. First, we formulate a version of stack that is well adapted for gluing quiver algebras with different numbers of vertices. Second, we develop a representation theory of $A_\infty$ categories by quiver stacks. A key step is constructing an extension of the $A_\infty$ category over a quiver stack of a collection of nc-deformed objects. The extension involves non-trivial gerbe terms, which play an important role in quiver algebroid stacks. Third, we develop a general construction of mirror quiver stacks. As an important example, we apply the constrution to nc local projective plane, whose compact divisor gives rise to interesting monodromy and homotopy terms. This employs a pair-of-pants decomposition of the mirror curve as proposed by Seidel \cite{Sei-spec}. Geometrically, we find a new method of mirror construction by gluing SYZ-type Lagrangians with a Lagrangian that serves as a `middle agent' using Floer theory. The method makes crucial use of the extension of Fukaya category over quiver stacks.