Conjecture on Airy limits for solvable random block tridiagonal matrix ensembles

From papers

Let r2r\geq 2 and let β=1\beta=1 or 22. Consider the point process associated with the r=2r=2, βs=2\beta s=2 joint density in Theorem 1, and the point process associated with the r=2r=2, βs=4\beta s=4 joint density when specified below. Airy scaling-limit conjecture. More generally, the point process scaling limit of the first density is distributed as Airyβ+2/r\operatorname{Airy}_{\beta+2/r} for all r2r\geq 2 and β=1\beta=1 or 22. For the second density with βs=4\beta s=4 and β=1\beta=1, the point process scaling limit is Airy3\operatorname{Airy}_3. These claims extend the explicitly established classical cases, in which the limiting processes are Airy2\operatorname{Airy}_2 and Airy4\operatorname{Airy}_4, and conjecturally identify the diffusion characterization with the general Airyβγ\operatorname{Airy}_{\beta\gamma} process.

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Primary source

Brian Rider and Benedek Valkó, “Solvable Families of Random Block Tridiagonal Matrices”, arXiv:2412.04579 (2026).

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