Etingof's monodromy conjecture for Dunkl-operator eigenlines

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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 χ∈hreg\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.

References

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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