English

Hofer-Zehnder capacity and a Hamiltonian circle action with noncontractible orbits

Symplectic Geometry 2011-12-23 v1

Abstract

Let (M,ω)(M,\omega) be an aspherical symplectic manifold, which is closed or convex. Let UU be an open set in MM, which admits a circle action generated by an autonomous Hamiltonian HC(U)H \in C^\infty(U), such that each orbit of the circle action is not contractible in MM. Under these assumptions, we prove that the Hofer-Zehnder capacity of UU is bounded by the Hofer norm of HH. The proof uses a variant of the energy-capacity inequality, which is proved by the theory of action selectors.

Keywords

Cite

@article{arxiv.1112.5247,
  title  = {Hofer-Zehnder capacity and a Hamiltonian circle action with noncontractible orbits},
  author = {Kei Irie},
  journal= {arXiv preprint arXiv:1112.5247},
  year   = {2011}
}

Comments

6pages