English

A conformal symplectic Weinstein conjecture

Symplectic Geometry 2023-10-16 v7 Differential Geometry Dynamical Systems

Abstract

We introduce a direct generalization of the Weinstein conjecture to closed, Lichnerowicz exact, locally conformally symplectic manifolds, (for short \lcs\lcs manifolds). This conjectures existence of certain 2-curves in the manifold, which we call Reeb 2-curves. The conjecture readily holds for all closed exact lcs surfaces. In higher dimensions, we give partial verifications of this conjecture, based on certain extended (Q{±}\mathbb{Q} ^{} \sqcup \{\pm \infty\} valued) Gromov-Witten, elliptic curve counts in \lcs\lcs manifolds. As a basic application we get some novel results in classical Reeb dynamics. The most basic such result gives sufficient conditions for a strict contactomorphism to fix the image of some closed Reeb orbit on a closed contact manifold. Along the way we give a Gromov-Witten theoretic construction of the classical dynamical Fuller index (for Reeb vector field), which among other things explains its rationality.

Keywords

Cite

@article{arxiv.2102.05820,
  title  = {A conformal symplectic Weinstein conjecture},
  author = {Yasha Savelyev},
  journal= {arXiv preprint arXiv:2102.05820},
  year   = {2023}
}

Comments

This is mostly superseded by arXiv:2309.09848

R2 v1 2026-06-23T23:03:28.736Z