Canonical curves and Kropina metrics in Lagrangian contact geometry

Abstract

We present a Fefferman-type construction from Lagrangian contact to conformal structures and examine several related topics. In particular, we concentrate on describing the canonical curves and their correspondence. We show that chains and null-chains of an integrable Lagrangian contact structure are the projections of null-geodesics of the Fefferman space. Employing the Fermat principle, we realize chains as geodesics of Kropina (pseudo-Finsler) metrics. Using recent rigidity results, we show that ``sufficiently many'' chains determine the Lagrangian contact structure. Separately, we comment on Lagrangian contact structures induced by projective structures and the special case of dimension three.

arXiv comment25 pages, no figures

References in corpus (7)

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• Two constructions with parabolic geometries
• Chains in CR geometry as geodesics of a Kropina metric
• Differential equations and para-CR structures
• Homogeneous integrable Legendrian contact structures in dimension five
• Conformal Patterson-Walker metrics
• A Projective-to-Conformal Fefferman-Type Construction