TL;DR
This paper introduces Calabi-Yau algebras derived from noncommutative symplectic DG algebra resolutions, exploring their geometric and algebraic properties, and relating them to mirror symmetry, representation varieties, and various geometric examples.
Contribution
It provides a universal construction of Calabi-Yau algebras and links their representation theory to geometric invariants and examples in mirror symmetry and algebraic geometry.
Findings
Calabi-Yau algebras constructed via noncommutative symplectic DG resolutions.
Representation varieties relate to critical points and vanishing cycles.
Numerical invariants potentially computed by matrix integrals.
Abstract
We introduce some new algebraic structures arising naturally in the geometry of Calabi-Yau manifolds and mirror symmetry. We give a universal construction of Calabi-Yau algebras in terms of a noncommutative symplectic DG algebra resolution. In dimension 3, the resolution is determined by a noncommutative potential. Representation varieties of the Calabi-Yau algebra are intimately related to the set of critical points, and to the sheaf of vanishing cycles of the potential. Numerical invariants, like ranks of cyclic homology groups, are expected to be given by `matrix integrals' over representation varieties. We discuss examples of Calabi-Yau algebras involving quivers, 3-dimensional McKay correspondence, crepant resolutions, Sklyanin algebras, hyperbolic 3-manifolds and Chern-Simons. Examples related to quantum Del Pezzo surfaces will be discussed in [EtGi].
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Taxonomy
TopicsAlgebraic structures and combinatorial models · Nonlinear Waves and Solitons · Advanced Topics in Algebra