Selective symplectic homology with applications to contact non-squeezing

Fuente: arXiv
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Autor principal: Uljarevic, Igor
Formato: Preprint
Publicado: 2022
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author Uljarevic, Igor
author_facet Uljarevic, Igor
contents We prove a contact non-squeezing phenomenon on homotopy spheres that are fillable by Liouville domains with infinite dimensional symplectic homology: there exists a smoothly embedded ball in such a sphere that cannot be made arbitrarily small by a contact isotopy. These homotopy spheres include examples that are diffeomorphic to standard spheres and whose contact structures are homotopic to standard contact structures. As the main tool, we construct a new version of symplectic homology, called selective symplectic homology, that is associated to a Liouville domain and an open subset of its boundary. The selective symplectic homology is obtained as the direct limit of Floer homology groups for Hamiltonians whose slopes tend to infinity on the open subset but remain close to 0 and positive on the rest of the boundary.
format Preprint
id arxiv_https___arxiv_org_abs_2205_14771
institution arXiv
publishDate 2022
record_format arxiv
spellingShingle Selective symplectic homology with applications to contact non-squeezing
Uljarevic, Igor
Symplectic Geometry
We prove a contact non-squeezing phenomenon on homotopy spheres that are fillable by Liouville domains with infinite dimensional symplectic homology: there exists a smoothly embedded ball in such a sphere that cannot be made arbitrarily small by a contact isotopy. These homotopy spheres include examples that are diffeomorphic to standard spheres and whose contact structures are homotopic to standard contact structures. As the main tool, we construct a new version of symplectic homology, called selective symplectic homology, that is associated to a Liouville domain and an open subset of its boundary. The selective symplectic homology is obtained as the direct limit of Floer homology groups for Hamiltonians whose slopes tend to infinity on the open subset but remain close to 0 and positive on the rest of the boundary.
title Selective symplectic homology with applications to contact non-squeezing
topic Symplectic Geometry
url https://arxiv.org/abs/2205.14771