Kodaira-Spencer map, Lagrangian Floer theory and orbifold Jacobian algebras

Abstract

A version of mirror symmetry predicts a ring isomorphism between quantum cohomology of a symplectic manifold and Jacobian algebra of the Landau-Ginzburg mirror, and for toric manifolds Fukaya-Oh-Ohta-Ono constructed such a map called Kodaira-Spencer map using Lagrangian Floer theory. We discuss a general construction of Kodaira-Spencer ring homomorphism when LG mirror potential $W$ is given by $J$-holomorphic discs with boundary on a Lagrangian $L$: we find an $A_{\infty }$-algebra $\mathcal{B}$ whose $m_1$-complex is a Koszul complex for $W$ under mild assumptions on $L$. Closed-open map gives a ring homomorphism from quantum cohomology to cohomology algebra of $\mathcal{B}$ which is Jacobian algebra of $W$. We also construct an equivariant version for orbifold LG mirror $(W,H)$. We construct a Kodaira-Spencer map from quantum cohomology to another $A_{\infty }$-algebra $(\mathcal{B}⋊H{)}^H$ whose cohomology algebra is isomorphic to the orbifold Jacobian algebra of $(W,H)$ under an assumption. For the $2$-torus whose mirror is an orbifold LG model given by Fermat cubic with a $\mathbb{Z}/3$-action, we compute an explicit Kodaira-Spencer isomorphism.

arXiv comment40 pages, 4 figures. Comments are welcome

References in corpus (12)

• Mirror symmetry and T-duality in the complement of an anticanonical divisor
• An integral structure in quantum cohomology and mirror symmetry for toric orbifolds
• Compact generators in categories of matrix factorizations
• Quantum Cohomology Rings of Toric Manifolds
• Cyclic symmetry and adic convergence in LagrangianFloer theory
• Lagrangian Floer theory and mirror symmetry on compact toric manifolds
• The Curious Case of Adversarially Robust Models: More Data Can Help, Double Descend, or Hurt Generalization
• Matrix factorizations via Koszul duality
• Noncommutative homological mirror functor
• Orbifold Jacobian algebras for invertible polynomials
• Pairings in mirror symmetry between a symplectic manifold and a Landau-Ginzburg $B$-model
• Big Quantum cohomology of orbifold spheres