Rigid subsets of symplectic manifolds
Abstract
We show that there is an hierarchy of intersection rigidity properties of sets in a closed symplectic manifold: some sets cannot be displaced by symplectomorphisms from more sets than the others. We also find new examples of rigidity of intersections involving, in particular, specific fibers of moment maps of Hamiltonian torus actions, monotone Lagrangian submanifolds (following the works of P.Albers and P.Biran-O.Cornea), as well as certain, possibly singular, sets defined in terms of Poisson-commutative subalgebras of smooth functions. In addition, we get some geometric obstructions to semi-simplicity of the quantum homology of symplectic manifolds. The proofs are based on the Floer-theoretical machinery of partial symplectic quasi-states.
Keywords
Cite
@article{arxiv.0704.0105,
title = {Rigid subsets of symplectic manifolds},
author = {Michael Entov and Leonid Polterovich},
journal= {arXiv preprint arXiv:0704.0105},
year = {2014}
}
Comments
Significant corrections and changes in the part on monotone Lagrangian submanifolds; a comment on the relation between Futaki invariant and mixed action-Maslov homomorphism added