Symplectic fillings of asymptotically dynamically convex manifolds I

Abstract

We consider exact fillings with vanishing first Chern class of asymptotically dynamically convex (ADC) manifolds. We construct two structure maps on the positive symplectic cohomology and prove that they are independent of the filling for ADC manifolds. The invariance of the structure maps implies that the vanishing of symplectic cohomology and the existence of symplectic dilations are properties independent of the filling for ADC manifolds. Using them, various topological applications on symplectic fillings are obtained, including the uniqueness of diffeomorphism types of fillings for many contact manifolds. We use the structure maps to define the first symplectic obstructions to Weinstein fillability. In particular, we show that for all dimension $4k+3,k\ge 1$, there exist infinitely many contact manifolds that are exactly fillable, almost Weinstein fillable but not Weinstein fillable. The invariance of the structure maps generalizes to strong fillings with vanishing first Chern class. We show that any strong filling with vanishing first Chern class of a class of manifolds, including $(S^{2n-1},{\xi }_{std}),\partial (T^{\ast }L\times {\mathbb{C}}^n)$ with $L$ simply connected, must be exact and have unique diffeomorphism type. As an application of the proof, we show that the existence of symplectic dilation implies uniruledness. In particular any affine exotic ${\mathbb{C}}^n$ with non-negative log Kodaira dimension is a symplectic exotic ${\mathbb{C}}^n$.

arXiv comment69 pages. Revised version, accepted by Journal of Topology

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Cited by in corpus (6)

• Symplectic fillings of asymptotically dynamically convex manifolds II--$k$-dilations
• $({\mathbb{RP}}^{2n-1},{\xi }_{std})$ is not exactly fillable for $n\ne 2^k$
• On filings of $\partial (V\times \mathbb{D})$
• On fillings of contact links of quotient singularities
• On the cohomology ring of symplectic fillings
• A landscape of contact manifolds via rational SFT