Unconditional equivalence between prismatic higher displays and integral local Shimura varieties

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Let (G,μ,b)(G,\mu,b) be an integral Shimura datum. Let B(G,μ,b)qsyn\mathcal{B}^{\textup{qsyn}}_{(G,\mu,b)} be the stack of prismatic higher (G,μ)(G,\mu)-displays with a quasi-isogeny to the fixed display associated with (G,μ,b)(G,\mu,b), and let \mathcal{M}^{\textup{\int}}(G,\mu,b) be the integral local Shimura variety. Write FibG\mathfrak{Fib}_G for the natural transformation from the former to the latter.

Unconditional local Shimura conjecture. The natural transformation

\mathfrak{Fib}_G:\mathcal{B}^{\textup{qsyn}}_{(G,\mu,b)}\to\mathcal{M}^{\textup{\int}}(G,\mu,b)

is an isomorphism.

The paper proves this under the assumption that the integral local Shimura variety is representable by the diamond of a formal scheme, and notes that the assumption is expected to hold but should be removable. The claim is known in the Hodge-type case, where representability is established.

References

Primary source

Mohammad Hadi Hedayatzadeh and Ali Partofard, “Deformations of Prismatic Higher (G,μ)-Displays over Quasi-Syntomic Rings”, arXiv:2402.12879 (2026).

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