On asymptotic behavior of Heine-Stieltjes and Van Vleck polynomials

We investigate the strong asymptotics of Heine-Stieltjes polynomials - polynomial solutions of a second order differential equations with complex polynomial coefficients. The solution is given in terms of critical measures (saddle points of the weighted logarithmic energy on the plane), that are tig...

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Detalhes bibliográficos
Main Authors: Martínez-Finkelshtein, Andrei, Rakhmanov, Evgenii A.
Formato: info:eu-repo/semantics/article
Idioma:English
Publicado em: 2012
Assuntos:
Acesso em linha:http://hdl.handle.net/10835/1627
Descrição
Resumo:We investigate the strong asymptotics of Heine-Stieltjes polynomials - polynomial solutions of a second order differential equations with complex polynomial coefficients. The solution is given in terms of critical measures (saddle points of the weighted logarithmic energy on the plane), that are tightly related to quadratic differentials with closed trajectories on the plane. The paper is a continuation of the research initiated in [arXiv:0902.0193]. However, the starting point here is the WKB method, which allows to obtain the strong asymptotics.