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Bulk Universality for Sparse Complex non-Hermitian Random Matrices

Probability 2025-08-06 v1 Mathematical Physics math.MP

Abstract

We prove that the local eigenvalue statistics in the bulk for complex random matrices with independent entries whose rr-th absolute moment decays as N1(r2)ϵN^{-1-(r-2)\epsilon} for some ϵ>0\epsilon>0 are universal. This includes sparse matrices whose entries are the product of a Bernouilli random variable with mean N1+ϵN^{-1+\epsilon} and an independent complex-valued random variable. By a standard truncation argument, we can also conclude universality for complex random matrices with 4+ϵ4+\epsilon moments. The main ingredient is a sparse multi-resolvent local law for products involving any finite number of resolvents of the Hermitisation and deterministic 2N×2N2N\times2N matrices whose N×NN\times N blocks are multiples of the identity.

Keywords

Cite

@article{arxiv.2508.03631,
  title  = {Bulk Universality for Sparse Complex non-Hermitian Random Matrices},
  author = {Mohammed Osman},
  journal= {arXiv preprint arXiv:2508.03631},
  year   = {2025}
}
R2 v1 2026-07-01T04:35:31.841Z