Asymptotic distribution of zeros of polynomials satisfying difference equations

Details Asymptotic distribution of zeros of polynomials satisfying difference equations Asymptotic distribution of zeros of polynomials satisfying difference equations

1998-11-19

arxiv.org/abs/math-ph/9811018v2

J.Comput.Appl.Math. 150, 57-70 (2003)

Physics

Mathematical Physics

18 pages, Latex, relation to WKB approach is discussed in more detail

Scientific paper

We propose a way to find the asymptotic distribution of zeros of orthogonal polynomials p_n(x) satisfying a difference equation of the form B(x)p_n(x+\delta)-C(x,n)p_n(x)+D(x)p_n(x-\delta)=0. We calculate the asymptotic distribution of zeros and asymptotics of extreme zeros of the Meixner and Meixner-Pollaczek polynomials. The distribution of zeros of Meixner polynomials shows some delicate features. We indicate the relation of our approach to the WKB technique and to the approach based on the Nevai-Ullman distribution.

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