The string homology–Legendrian contact homology correspondence for conormal bundles

Let KK be a compact oriented submanifold of Rn\mathbb{R}^n, and let ΛK\Lambda_K denote its unit conormal bundle in UTRnUT^*\mathbb{R}^n. Let Hstring(Rn,K)H^{\mathrm{string}}_*(\mathbb{R}^n,K) be the string homology algebra associated with (Rn,K)(\mathbb{R}^n,K).

String homology–Legendrian contact homology conjecture. For any compact oriented submanifold KK in Rn\mathbb{R}^n, Hstring(Rn,K)H^{\mathrm{string}}_*(\mathbb{R}^n,K) is isomorphic to the Legendrian contact homology of (UTRn,ΛK)(UT^*\mathbb{R}^n,\Lambda_K) with coefficients in R\mathbb{R}.

This conjecture proposes a direct identification between the topological string homology invariant and Legendrian contact homology for unit conormal bundles, extending the known relationship between the cord algebra and degree-zero Legendrian contact homology in the knot case.

Sources & referencesView supporting material

Primary source

Yukihiro Okamoto, “Toward a topological description of Legendrian contact homology of unit conormal bundles”, arXiv:2212.13705 (2023).

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