The critical-window conjecture for cokernels of random band matrices

From papers

Let pp be a prime, let (να)αR(\nu_{\alpha})_{\alpha\in\mathbb{R}} be a proposed one-parameter family of distributions on the set of finite abelian pp-groups, and let n1<n2<n_1<n_2<\dots be positive integers. For each ii, let Bi\mathbf{B}_i be an ni×nin_i\times n_i band matrix over Zp\mathbb{Z}_p with band width wiw_i. Assume that

limi(wilogp(ni))=α.\lim_{i\to\infty} \bigl(w_i-\log_p(n_i)\bigr)=\alpha.

For every finite abelian pp-group GG, critical-window cokernel conjecture.

limiP(cok(Bi)G)=να(G).\lim_{i\to\infty}\mathbb{P}\bigl(\operatorname{cok}(\mathbf{B}_i)\cong G\bigr)=\nu_{\alpha}(G).

The conjecture predicts a family of limiting cokernel laws at the critical scale wilogp(ni)w_i\sim\log_p(n_i). The paper's preceding tightness result motivates this formulation, but the supplied text gives no evidence that the conjecture has been resolved.

Progress summary

Nothing recorded yet. Refresh searches the literature and the public web for attempts on this problem, and writes the first summary here.

Sources & referencesView supporting material

Primary source

András Mészáros, “A phase transition for the cokernels of random band matrices over the p-adic integers”, arXiv:2408.13037 (2024).

Solutions 0

No solutions have been posted yet.