Skein-module Langlands duality for closed oriented 3-manifolds

Let GG be a semisimple algebraic group, and let LG{^LG} denote its Langlands dual group. Let MM be a closed, oriented 3-manifold. Suppose that ΨC×\Psi \in \mathbb{C}^\times is transcendental, and set

q=eiΨ,Lq=eiLΨ.q=e^{\mathrm{i}\Psi},\qquad {^Lq}=e^{\mathrm{i}{^L\Psi}}.

Skein-module Langlands duality conjecture. There is a linear isomorphism

SkG,q(M)SkLG,Lq(M).\mathrm{Sk}_{G,q}(M) \cong \mathrm{Sk}_{{^LG},{^Lq}}(M).

The conjecture is motivated by the specialization of skein modules at q=1q=1 to functions on character varieties, and is a three-dimensional, quantum-skein analogue of Langlands duality. The skein modules are known to be finite-dimensional under these assumptions, reducing the assertion at the level of dimensions to an equality of natural numbers; the full canonical isomorphism remains conjectural.

Sources & referencesView supporting material

Primary source

David Jordan, “Langlands duality for skein modules of 3-manifolds”, arXiv:2302.14734 (2023).

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