09-2024
The infimum of the spectral capacities of neighbourhoods of a nowhere coisotropic submanifold is shown to be zero. In contrast, neighbourhoods of a closed Lagrangian submanifold, and of certain contact-type hypersurfaces, are shown to have uniformly positive spectral capacity. Along the way we prove a quantitative Lagrangian control estimate relating spectral invariants, boundary depth, and the minimal area of holomorphic disks. The Lagrangian control also provides novel obstructions to certain Lagrangian embeddings into a symplectic ball.
@misc{spec-cap-submanifold,
author = {Dylan Cant and Jun Zhang},
title = {On the spectral capacity of submanifolds},
year = {2024},
eprint = {2409.14142},
archivePrefix = {arXiv},
primaryClass = {math.SG},
}