Quantum cohomology semisimplicity conjecture for linear sections of (co)adjoint varieties

Let XX be an adjoint or quasi-minuscule variety as above, and let YXY\subset X be a general linear section. Write BQH(Y){\rm BQH}(Y) and QH(Y){\rm QH}(Y) for its small and big quantum cohomology algebras. Semisimplicity conjecture. The algebra BQH(Y){\rm BQH}(Y) is semi-simple, and QH(Y){\rm QH}(Y) is semi-simple if and only if QH(X){\rm QH}(X) is semi-simple. This extends the known semisimplicity results for the ambient adjoint and quasi-minuscule varieties to their general linear sections; the paper proves partial results, but the full statement remains open.

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Primary source

Vladimiro Benedetti and Nicolas Perrin, “Cohomology of hyperplane sections of (co)adjoint varieties”, arXiv:2207.02089 (2022).

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