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arXiv · 2409.16010

On the set of asymptotic homologies of orbits on invariant Lagrangian graphs

Rafael Oswaldo Ruggiero·Alfonso Sorrentino
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Abstract

Given a smooth Tonelli Hamiltonian on the torus $\mathbb{T}^{n}$ and a $C^{2}$ Lagrangian graph $W \subset T^{*}\mathbb{T}^{n}$ that is invariant under the Hamiltonian flow and contained within a Ma\~n\'e supercritical energy level, we demonstrate the existence of a proper cone in the first real homology group $H_1(\mathbb{T}^n,\mathbb{R})$ that contains the asymptotic homologies of the canonical projections of recurrent orbits in $W$. Additionally, for invariant Lagrangian graphs on $\mathbb{T}^{3}$, drawing on Franks' theory of the rotation set of homeomorphisms of $\mathbb{T}^{2}$ homotopic to the identity, we show that under certain assumptions for an invariant Lagrangian graph on $\mathbb{T}^{3}$, if there exists a rational vector in homology contained in the set of asymptotic homologies of orbits on the Lagrangian graph, then the graph contains a Mather measure supported on a periodic orbit. This result generalizes a well-known fact for Lagrangian graphs on $\mathbb{T}^{2}$. Finally, we exploit these results for three dimensional tori to give a partial answer to a conjecture by Carneiro-Ruggiero about the non-existence of Hedlund Lagrangian tori at supercritical energy levels.

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Rafael Oswaldo Ruggiero, Alfonso Sorrentino. 2024-09-24. On the set of asymptotic homologies of orbits on invariant Lagrangian graphs. https://arxiv.org/abs/2409.16010

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