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Growth of the zeta function for a quadratic map and the dimension of the Julia set

John Strain and Maciej Zworski

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Recommended by C Liverani

We show that the zeta function for the dynamics generated by the map z map z2 + c, c < − 2, can be estimated in terms of the dimension of the corresponding Julia set. That implies a geometric upper bound on the number of its zeros, which are interpreted as resonances for this dynamical systems. The method of proof of the upper bound is used to construct a code for counting the number of zeros of the zeta function. The numerical results support the conjecture that the upper bound in terms of the dimension of the Julia set is optimal.


PACS

05.45.-a Nonlinear dynamics and nonlinear dynamical systems

02.30.-f Function theory, analysis

MSC

11S40 Zeta functions and L-functions (See also 11M41, 19F27)

37C30 Zeta functions, (Ruelle-Frobenius) transfer operators, and other functional analytic techniques in dynamical systems

Subjects

Mathematical physics

Statistical physics and nonlinear systems

Dates

Issue 5 (September 2004)

Received 2 December 2003, in final form 18 March 2004

Published 27 May 2004



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