The disk-potential deformation conjecture for knot augmentations

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Let KK be a knot. For every Reeb chord αij\alpha_{ij} connecting points ξi\xi_i and ηj\eta_j, let αij(t,p)\alpha_{ij}(t,p) be a function, and write ϵ={αij(t,p)}\epsilon=\{\alpha_{ij}(t,p)\} for the resulting collection. Let UK0,ϵ(t,p)U_{K}^{0,\epsilon}(t,p) denote the disk potential obtained by counting generalized disks with boundary on MKM_K and negative punctures at these Reeb chords, weighting each negative puncture asymptotic to αij\alpha_{ij} by αij(t,p)\alpha_{ij}(t,p). Set

x=∂UK0,ϵ∂p.x=\frac{\partial U_{K}^{0,\epsilon}}{\partial p}.

Disk-potential deformation conjecture. For any knot KK, there is a collection of functions ϵ={αij(t,p)}\epsilon=\{\alpha_{ij}(t,p)\} such that UK0,ϵ(p,t)U_{K}^{0,\epsilon}(p,t) is invariant under deformations, and the equation defined by xx cuts out a branch of the augmentation variety. Moreover,

lim⁡t→0exp⁡(∂tUK0,ϵ(p,t))=(1−ep)−1ΔK(ep).\lim_{t\to 0}\exp\left(\partial_tU_{K}^{0,\epsilon}(p,t)\right)=(1-e^p)^{-1}\Delta_K(e^p).

This conjecture proposes that the Alexander polynomial of an arbitrary knot is recovered from a deformation of the disk potential incorporating negative punctures at Reeb chords. The invariance and augmentation-variety statement, as well as the required deformation and its limiting behavior, are not established in the supplied text.

References

Primary source

Luís Diogo and Tobias Ekholm, “Augmentations, annuli, and Alexander polynomials”, arXiv:2005.09733 (2024).

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