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arXiv · 1605.00883

A multidimensional birkhoff theorem for time-dependent tonelli hamiltonians

Marie-Claude Arnaud·Andrea Venturelli
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Abstract

Let $M$ be a closed and connected manifold, $H:T^*M\times \mathbb{R} / \mathbb{Z} \to \mathbb{R}$ a Tonelli $1$-periodic Hamiltonian and $\mathcal{L} \subset T^*M$ a Lagrangian submanifold Hamiltonianly isotopic to the zero section. We prove that if $\mathcal{L}$ is invariant by the time-one map of $H$, then $\mathcal{L}$ is a graph over $M$. An interesting consequence in the autonomous case is that in this case, $\mathcal{L}$ is invariant by all the time $t$ maps of the Hamiltonian flow of $H$.

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Marie-Claude Arnaud, Andrea Venturelli. 2016-05-03. A multidimensional birkhoff theorem for time-dependent tonelli hamiltonians. https://arxiv.org/abs/1605.00883

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