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On the eigenvalues of a renormalization operator

Michael Yampolsky

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Recommended by T Prosen

We study the unstable eigenvalues of the renormalization of critical circle maps. The fixed points of this renormalization operator are critical circle maps fn with rotation numbers

ρn = 1/(n+(1/n+...)).

We show that the corresponding unstable eigenvalues λn asymp n2.


PACS

02.10.Ud Linear algebra

02.30.Oz Bifurcation theory

02.30.Tb Operator theory

02.20.-a Group theory

MSC

37F45 Holomorphic families of dynamical systems; the Mandelbrot set; bifurcations

15A18 Eigenvalues, singular values, and eigenvectors

37F25 Renormalization

37E10 Maps of the circle

37Gxx Local and nonlocal bifurcation theory (See also 34C23, 34K18)

Subjects

Mathematical physics

Dates

Issue 5 (September 2003)

Received 3 October 2002, in final form 28 May 2003

Published 20 June 2003


A Corrigendum for this article has been published in 2004 Nonlinearity 17 743


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