English

Saddle points in the chaotic analytic function and Ginibre characteristic polynomial

Chaotic Dynamics 2009-11-07 v3

Abstract

Comparison is made between the distribution of saddle points in the chaotic analytic function and in the characteristic polynomials of the Ginibre ensemble. Realising the logarithmic derivative of these infinite polynomials as the electric field of a distribution of coulombic charges at the zeros, a simple mean-field electrostatic argument shows that the density of saddles minus zeros falls off as π1z4\pi^{-1}|z|^{-4} from the origin. This behaviour is expected to be general for finite or infinite polynomials with zeros uniformly randomly distributed in the complex plane, and which repel quadratically.

Keywords

Cite

@article{arxiv.nlin/0209056,
  title  = {Saddle points in the chaotic analytic function and Ginibre characteristic polynomial},
  author = {M. R. Dennis and J. H. Hannay},
  journal= {arXiv preprint arXiv:nlin/0209056},
  year   = {2009}
}

Comments

6 pages, 2 figures; revised

R2 v1 2026-07-22T18:10:02.529Z