Oscillation-energy conjecture for translated points on compact contact manifolds

Let (Y,α)(Y,\alpha) be a compact contact manifold, and let φ\varphi be a contactomorphism of YY. The spectral gap of α\alpha is the minimal positive action of a Reeb orbit of (Y,α)(Y,\alpha), and φαosc|\varphi|^{\mathrm{osc}}_{\alpha} denotes the oscillation norm. The implication

φαosc<2(spectral gap of α)    φ has at least one translated point, with at least dimH(Y,Z/2) in the case all the translated points are non-degenerate|\varphi|^{\mathrm{osc}}_{\alpha}<2(\text{spectral gap of }\alpha)\implies \varphi\text{ has at least one translated point, with at least }\dim H_{*}(Y,\mathbb{Z}/2)\text{ in the case all the translated points are non-degenerate}

Oscillation-energy conjecture. If φ\varphi is a contactomorphism of an arbitrary compact contact manifold YY, then the implication above holds.

Shelukhin established this implication under an exact-filling assumption on YY using Rabinowitz Floer homology; the conjecture asks for the result without that assumption.

Sources & referencesView supporting material

Primary source

Dylan Cant, “Remarks on the oscillation energy of Legendrian isotopies”, arXiv:2301.06205 (2023).

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