Towards a theory of chaos explained as travel on Riemann surfaces

Calogero, Francesco, Gómez-Ullate, David, Santini, Paolo and Sommacal, Matteo (2009) Towards a theory of chaos explained as travel on Riemann surfaces. Journal of Physics A: Mathematical and Theoretical, 42 (1). 015205. ISSN 1751-8113

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Official URL: http://dx.doi.org/10.1088/1751-8113/42/1/015205

Abstract

It is shown that the system can be reduced to quadratures which can be expressed in terms of elementary functions. Despite the integrable character of the model, the general solution is a multiple-valued function of time (considered as a complex variable), and we investigate the position and nature of its branch points. In the semi-symmetric case (g1 = g2 ≠ g3), for rational values of the coupling constants the system is isochronous and explicit formulae for the period of the solutions can be given. For irrational values, the motions are confined but feature aperiodic motion with sensitive dependence on initial conditions. The system shows a rich dynamical behaviour that can be understood in quantitative detail since a global description of the Riemann surface associated with the solutions can be achieved. The details of the description of the Riemann surface are postponed to a forthcoming publication. This toy model is meant to provide a paradigmatic first step towards understanding a certain novel kind of chaotic behaviour.

Item Type: Article
Subjects: G100 Mathematics
Department: Faculties > Engineering and Environment > Mathematics and Information Sciences
Depositing User: Ay Okpokam
Date Deposited: 24 Jan 2012 16:40
Last Modified: 10 Aug 2015 11:27
URI: http://nrl.northumbria.ac.uk/id/eprint/5080

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