Point-like bounding chains in open Gromov-Witten theory

Abstract

We present a solution to the problem of defining genus zero open Gromov-Witten invariants with boundary constraints for a Lagrangian submanifold of arbitrary dimension. Previously, such invariants were known only in dimensions $2$ and $3$ from the work of Welschinger. Our approach does not require the Lagrangian to be fixed by an anti-symplectic involution, but can use such an involution, if present, to obtain stronger results. Also, non-trivial invariants are defined for broader classes of interior constraints and Lagrangian submanifolds than previously possible even in the presence of an anti-symplectic involution. The invariants of the present work specialize to invariants of Welschinger, Fukaya, and Georgieva in many instances. The main obstacle to defining open Gromov-Witten invariants with boundary constraints in arbitrary dimension is the bubbling of $J$-holomorphic disks. Unlike in low dimensions or for interior constraints, disk bubbles do not cancel in pairs by anti-symplectic involution symmetry. Rather, we use the technique of bounding chains introduced in Fukaya-Oh-Ohta-Ono's work on Lagrangian Floer theory to cancel disk bubbling. At the same time and independently, gauge equivalence classes of bounding chains play the role of boundary constraints, in place of the cohomology classes that usually serve as constraints in Gromov-Witten theory. A crucial step in our construction is to identify a canonical up to gauge equivalence family of "point-like" bounding chains, which specialize in dimensions $2$ and $3$ to the point constraints considered by Welschinger.

66 pages, 2 figures; includes summary of results needed from arXiv:1608.01304; added explanations, details, and references; minor corrections

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Cited by in corpus (13)

• Stable maps to Looijenga pairs
• Relative quantum cohomology
• WDVV-Type Relations for Disk Gromov-Witten Invariants in Dimension 6
• Differential forms, Fukaya $A_{\infty }$ algebras, and Gromov-Witten axioms
• Involutions, obstructions and mirror symmetry
• Fixed-point Localization for ${\mathbb{RP}}^{2m}\subset {\mathbb{CP}}^{2m}$
• Equivariant Open Gromov-Witten Theory of $\mathbb{R}{\mathbb{P}}^{2m}\hookrightarrow \mathbb{C}{\mathbb{P}}^{2m}$
• Real Log Curves in Toric Varieties, Tropical Curves, and Log Welschinger Invariants
• Solomon-Tukachinsky's vs. Welschinger's Open Gromov-Witten Invariants of Symplectic Sixfolds
• Differential forms on orbifolds with corners
• Open Gromov-Witten invariants from the Fukaya category
• A Geometric Depiction of Solomon-Tukachinsky's Construction of Open GW-Invariants
• Displacement energy of Lagrangian 3-spheres