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Related papers: From 2N to infinitely many escape orbits

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Motivated by Poincar\'e's orbits going to infinity in the (restricted) three-body (see [26] and [6]), we investigate the generic existence of heteroclinic-like orbits in a neighbourhood of the critical set of a $b$-contact form. This is…

Symplectic Geometry · Mathematics 2022-03-15 Eva Miranda , Cédric Oms , Daniel Peralta-Salas

In this article, we study the dynamical properties of Reeb vector fields on b-contact manifolds. We show that in dimension 3, the number of so-called singular periodic orbits can be prescribed. These constructions illuminate some key…

Symplectic Geometry · Mathematics 2025-09-01 Josep Fontana-McNally , Eva Miranda , Cédric Oms , Daniel Peralta-Salas

We show that every (possibly degenerate) contact form on a closed three-manifold has at least two embedded Reeb orbits. We also show that if there are only finitely many embedded Reeb orbits, then their symplectic actions are not all…

Symplectic Geometry · Mathematics 2014-01-07 Daniel Cristofaro-Gardiner , Michael Hutchings

We show that the existence of one simple closed Reeb orbit of a particular type (a symplectically degenerate maximum) forces the Reeb flow to have infinitely many periodic orbits. We use this result to give a different proof of a recent…

Symplectic Geometry · Mathematics 2012-10-19 Viktor L. Ginzburg , Doris Hein , Umberto L. Hryniewicz , Leonardo Macarini

A long standing conjecture in Hamiltonian Dynamics states that every contact form on the standard contact sphere $S^{2n+1}$ has at least $n+1$ simple periodic Reeb orbits. In this work, we consider a refinement of this problem when the…

Symplectic Geometry · Mathematics 2024-04-25 Miguel Abreu , Hui Liu , Leonardo Macarini

We prove that every nondegenerate contact form on a closed connected three-manifold, such that the associated contact structure has torsion first Chern class, has either two or infinitely many simple Reeb orbits. By previous results it…

Symplectic Geometry · Mathematics 2020-01-08 Dan Cristofaro-Gardiner , Michael Hutchings , Dan Pomerleano

In this paper, it is proved that under dynamically convex condition, there exist at least $[\frac{n+1}{2}]$ closed Reeb orbits on a closed contact type hypersurface in $T^*S^n$ enclosing the zero section and bounding a simply connected…

Symplectic Geometry · Mathematics 2026-03-10 Huagui Duan , Zihao Qi

We construct a contact form on R^{2n+1}, n at least 2, equal to the standard contact form outside a compact set and defining the standard contact structure on all of R^{2n+1}, which has trapped Reeb orbits, including a torus invariant under…

Symplectic Geometry · Mathematics 2017-08-02 Hansjörg Geiges , Nena Röttgen , Kai Zehmisch

In this paper we prove the existence of infinitely many closed Reeb orbits for a certain class of contact manifolds. This result can be viewed as a contact analogue of the Hamiltonian Conley conjecture. The manifolds for which the contact…

Symplectic Geometry · Mathematics 2014-07-08 Viktor L. Ginzburg , Basak Z. Gurel , Leonardo Macarini

Let A be an affine variety inside a complex N dimensional vector space which has an isolated singularity at the origin. The intersection of A with a very small sphere turns out to be a contact manifold called the link of A. Any contact…

Symplectic Geometry · Mathematics 2015-04-30 Mark McLean

We study the existence of multiple closed Reeb orbits on some contact manifolds by means of $S^1$-equivariant symplectic homology and the index iteration formula. It is proved that a certain class of contact manifolds which admit…

Symplectic Geometry · Mathematics 2014-10-16 Jungsoo Kang

We prove that for a $C^\infty$-generic contact form defining a given co-oriented contact structure on a closed $3$-manifold, every hyperbolic periodic Reeb orbit admits a transverse homoclinic connection in each of the branches of its…

Symplectic Geometry · Mathematics 2025-01-22 Vincent Colin , Umberto Hryniewicz , Ana Rechtman

Consider a symplectic surface in a three-dimensional contact manifold with boundary on Reeb orbits (periodic orbits of the Reeb vector field). We assume that the rotation numbers of the boundary Reeb orbits satisfy a certain inequality, and…

Symplectic Geometry · Mathematics 2025-05-23 Michael Hutchings

In this article, we investigate Reeb dynamics on $b^m$-contact manifolds, previously introduced in [MiO], which are contact away from a hypersurface $Z$ but satisfy certain transversality conditions on $Z$. The study of these contact…

Symplectic Geometry · Mathematics 2023-06-16 Eva Miranda , Cédric Oms

It is known that every contact form on a closed three-manifold has at least two simple Reeb orbits, and a generic contact form has infinitely many. We show that if there are exactly two simple Reeb orbits, then the contact form is…

Symplectic Geometry · Mathematics 2023-12-13 Dan Cristofaro-Gardiner , Umberto Hryniewicz , Michael Hutchings , Hui Liu

We give a sharp lower bound for the number of geometrically distinct contractible periodic orbits of dynamically convex Reeb flows on prequantizations of symplectic manifolds that are not aspherical. Several consequences of this result are…

Symplectic Geometry · Mathematics 2016-11-03 Miguel Abreu , Leonardo Macarini

Stable Hamiltonian structures generalize contact forms and define a volume-preserving vector field known as the Reeb vector field. We study two aspects of Reeb vector fields defined by stable Hamiltonian structures on 3-manifolds: on one…

Dynamical Systems · Mathematics 2024-09-25 Robert Cardona , Ana Rechtman

In this article we extend results of Grove and Tanaka on the existence of isometry-invariant geodesics to the setting of Reeb flows and strict contactomorphisms. Specifically, we prove that if M is a closed connected manifold with the…

Symplectic Geometry · Mathematics 2014-11-20 Will J. Merry , Kathrin Naef

We investigate the effect of a hyperbolic (or, more generally, isolated as an invariant set) closed Reeb orbit on the dynamics of a Reeb flow on the $(2n-1)$-dimensional standard contact sphere, extending two results previously known for…

Symplectic Geometry · Mathematics 2025-11-27 Erman Cineli , Viktor L. Ginzburg , Basak Z. Gurel , Marco Mazzucchelli

We prove that every non-degenerate Reeb flow on a closed contact manifold $M$ admitting a strong symplectic filling $W$ with vanishing first Chern class carries at least two geometrically distinct closed orbits provided that the positive…

Symplectic Geometry · Mathematics 2021-07-01 Miguel Abreu , Jean Gutt , Jungsoo Kang , Leonardo Macarini
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