Normal matrix models, dbar-problem, and orthogonal polynomials on the complex plane
Classical Analysis and ODEs
2007-08-30 v1 Mathematical Physics
math.MP
Exactly Solvable and Integrable Systems
Abstract
We introduce a dbar-formulation of the orthogonal polynomials on the complex plane, and hence of the related normal matrix model, which is expected to play the same role as the Riemann-Hilbert formalism in the theory of orthogonal polynomials on the line and for the related Hermitian model. We propose an analog of Deift-Kriecherbauer-McLaughlin-Venakides-Zhou asymptotic method for the analysis of the relevant dbar-problem, and indicate how familiar steps for the Hermitian model, e.g. the g-function ``undressing'', might look like in the case of the normal model. We use the particular model considered recently by P. Elbau and G. Felder as a case study.
Cite
@article{arxiv.0708.3867,
title = {Normal matrix models, dbar-problem, and orthogonal polynomials on the complex plane},
author = {Alexander R. Its and Leon A. Takhtajan},
journal= {arXiv preprint arXiv:0708.3867},
year = {2007}
}
Comments
14 pages