Gromov-Witten invariants and pseudo symplectic capacities

Details Gromov-Witten invariants and pseudo symplectic capacities Gromov-Witten invariants and pseudo symplectic capacities

2001-03-28

arxiv.org/abs/math/0103195v10

Israel Journal of Mathematics 156(2006), 1-63

Mathematics

Symplectic Geometry

63 pages

Scientific paper

We introduce the concept of pseudo symplectic capacities which is a mild generalization of that of symplectic capacities. As a generalization of the Hofer-Zehnder capacity we construct a Hofer-Zehnder type pseudo symplectic capacity and estimate it in terms of Gromov-Witten invariants. The (pseudo) symplectic capacities of Grassmannians and some product symplectic manifolds are computed. As applications we first derive some general nonsqueezing theorems that generalize and unite many previous versions, then prove the Weinstein conjecture for cotangent bundles over a large class of symplectic uniruled manifolds (including the uniruled manifolds in algebraic geometry) and also show that any closed symplectic submanifold of codimension two in any symplectic manifold has a small neighborhood whose Hofer-Zehnder capacity is less than a given positive number. Finally, we give two results on symplectic packings in Grassmannians and on Seshadri constants.

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