| Rigidity properties of Anosov optical hypersurfaces (2005) | |||||||||
Abstract | |||||||||
| We consider an optical hypersurface $\Sigma$ in the cotangent bundle $\tau:T^*M\to M$ of a closed manifold $M$ endowed with a twisted symplectic structure. We show that if the characteristic foliation of $\Sigma$ is Anosov, then a smooth 1-form $\theta$ on $M$ is exact if and only $\tau^*\theta$ has zero integral over every closed characteristic of $\Sigma$. This result is derived from a related theorem about magnetic flows which generalizes our work in \cite{DP}. Other rigidity issues are also discussed. | |||||||||
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