Symplectic Homology of complements of smooth divisors

Abstract

If $(X,\omega )$ is a symplectic manifold, and $\Sigma$ is a smooth symplectic submanifold Poincaré dual to a positive multiple of $\omega$, $X\setminus \Sigma$ admits a compactification as a Liouville domain, which we then complete to $(W,d\lambda )$. Under monotonicity assumptions on $X$ and on $\Sigma$, we construct a chain complex whose homology computes the Symplectic Homology of $W$. We show the differential is given in terms of Morse contributions, terms computed from Gromov-Witten invariants of $X$ relative to $\Sigma$ and terms computed from the Gromov-Witten invariants of $\Sigma$. We use a Morse-Bott model for symplectic homology. Our proof involves comparing Floer cylinders with punctures to pseudoholomorphic curves in in the symplectization of the unit normal bundle to $\Sigma$.

revisions thanks to feedback from referee, accepted in Journal of Topology

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• Morse-Bott cohomology from homological perturbation theory
• On fillings of contact links of quotient singularities
• Rabinowitz Floer homology of negative line bundles and Floer Gysin sequence
• Subcritical polarisations of symplectic manifolds have degree one
• A landscape of contact manifolds via rational SFT