Two irrationally elliptic closed orbits of Reeb flows on the boundary of star-shaped domain in $\mathbb{R}^{2n}$

Fuente: arXiv
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Main Authors: Li, Xiaorui, Liu, Hui, Wang, Wei
Format: Preprint
Published: 2025
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_version_ 1866909830964314112
author Li, Xiaorui
Liu, Hui
Wang, Wei
author_facet Li, Xiaorui
Liu, Hui
Wang, Wei
contents There are two long-standing conjectures in Hamiltonian dynamics concerning Reeb flows on the boundaries of star-shaped domains in $\mathbb{R}^{2n}$ ($n \geq 2$). One conjecture states that such a Reeb flow possesses either $n$ or infinitely many prime closed orbits; the other states that all the closed Reeb orbits are irrationally elliptic when the domain is convex and the flow possesses finitely many prime closed orbits. In this paper, we prove that for dynamically convex Reeb flow on the boundary of a star-shaped domain in $\mathbb{R}^{2n}$ ($n \geq 2$) with exactly $n$ prime closed orbits, at least two of them must be irrationally elliptic.
format Preprint
id arxiv_https___arxiv_org_abs_2510_06597
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Two irrationally elliptic closed orbits of Reeb flows on the boundary of star-shaped domain in $\mathbb{R}^{2n}$
Li, Xiaorui
Liu, Hui
Wang, Wei
Dynamical Systems
Symplectic Geometry
37J12, 57R58, 37J25
There are two long-standing conjectures in Hamiltonian dynamics concerning Reeb flows on the boundaries of star-shaped domains in $\mathbb{R}^{2n}$ ($n \geq 2$). One conjecture states that such a Reeb flow possesses either $n$ or infinitely many prime closed orbits; the other states that all the closed Reeb orbits are irrationally elliptic when the domain is convex and the flow possesses finitely many prime closed orbits. In this paper, we prove that for dynamically convex Reeb flow on the boundary of a star-shaped domain in $\mathbb{R}^{2n}$ ($n \geq 2$) with exactly $n$ prime closed orbits, at least two of them must be irrationally elliptic.
title Two irrationally elliptic closed orbits of Reeb flows on the boundary of star-shaped domain in $\mathbb{R}^{2n}$
topic Dynamical Systems
Symplectic Geometry
37J12, 57R58, 37J25
url https://arxiv.org/abs/2510.06597