English

Local deformed semicircle law and complete delocalization for Wigner matrices with random potential

Probability 2013-09-17 v3 Mathematical Physics math.MP

Abstract

We consider Hermitian random matrices of the form H=W+λVH = W + \lambda V, where WW is a Wigner matrix and VV a diagonal random matrix independent of WW. We assume subexponential decay for the matrix entries of WW and we choose λ1\lambda \sim 1 so that the eigenvalues of WW and λV\lambda V are of the same order in the bulk of the spectrum. In this paper, we prove for a large class of diagonal matrices VV that the local deformed semicircle law holds for HH, which is an analogous result to the local semicircle law for Wigner matrices. We also prove complete delocalization of eigenvectors and other results about the positions of eigenvalues.

Keywords

Cite

@article{arxiv.1302.4532,
  title  = {Local deformed semicircle law and complete delocalization for Wigner matrices with random potential},
  author = {Ji Oon Lee and Kevin Schnelli},
  journal= {arXiv preprint arXiv:1302.4532},
  year   = {2013}
}

Comments

60 pages

R2 v1 2026-06-21T23:28:32.655Z