Crystal structure on Coulomb-branch components

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Let M(μ,λ)\mathcal M(\mu,\lambda) be the Coulomb branch and let A\mathcal A be its attracting set. Consider the union, over the relevant weights μ\mu, of the sets of irreducible components of A\mathcal A having dimension

12dimM(μ,λ).\frac12\mathop{\text{\rm dim}}\nolimits\mathcal M(\mu,\lambda).

Let L(λ)L(\lambda) be the integrable highest-weight representation of highest weight λ\lambda, with its crystal structure. Coulomb-branch crystal conjecture. This union should have a crystal structure isomorphic to the crystal of L(λ)L(\lambda). The claim extends the interpretation of attracting-set components as Mirković–Vilonen cycles from dominant weights to arbitrary weights, and the supplied text does not state a resolution.

References

Primary source

Hiraku Nakajima and Yuuya Takayama, “Cherkis bow varieties and Coulomb branches of quiver gauge theories of affine type A”, arXiv:1606.02002 (2025).

Additional references

2 papers in this index state this conjecture (2006–2016). The statement above is taken from the most recent of them; the others are arXiv:math/0601391.

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