Parametric Gromov width of Liouville domains
Abstract
The classical Gromov width measures the largest symplectic ball embeddable into a symplectic manifold; inspired by the symplectic camel problem, we generalize this to ask how large a symplectic ball can be embedded as a family over a parameter space . Given a smooth map , where is a symplectic manifold, we define the \emph{parametric Gromov width} as the supremum of capacities for which there exists a family of balls, parametrized by , of capacity whose centers trace out the map . For Liouville domains , we establish upper bounds on using the Floer cohomology persistence module associated to . Specializing to fiberwise starshaped domains in the cotangent bundle , we derive computable bounds via filtered string topology. Specific examples of -- including disk cotangent bundles of thin ellipsoids, open books, and tori -- demonstrate our bounds, and reveal constraints on parameterized symplectic embeddings beyond the classical Gromov width.
Keywords
Cite
@article{arxiv.2504.15207,
title = {Parametric Gromov width of Liouville domains},
author = {Filip Broćić and Dylan Cant},
journal= {arXiv preprint arXiv:2504.15207},
year = {2025}
}
Comments
97 pages. Replacement generalizes main definition and provides further applications