Etingof's monodromy conjecture for Dunkl-operator eigenlines

Let WW be a Weyl group, let CΔC_\Delta be the cactus group acting on WW, and suppose that the family of algebras DχD_\chi, parametrized by χhreg\chi\in\mathfrak h^{reg}, compactifies to a family parametrized by MΔ\mathcal M_\Delta. Assuming a simple-spectrum result, this gives a covering of MΔ(R)\mathcal M_\Delta(\mathbb R) whose fibres are the eigenlines EDχ(CW)\mathcal E_{D_\chi}(\mathbb C W). Etingof's monodromy conjecture. The monodromy of this covering agrees with the action of CΔC_\Delta on WW. This conjecture relates the monodromy of the eigenline covering to the cactus-group action constructed using perverse equivalences and wall-crossing functors; the source does not state whether it has been proved or disproved.

Sources & referencesView supporting material

Primary source

Iva Halacheva, Joel Kamnitzer, Leonid Rybnikov and Alex Weekes, “Crystals and monodromy of Bethe vectors”, arXiv:1708.05105 (2020).

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