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Order - chaos transitions in field theories with topological terms: a dynamical systems approach

C Mukku-+, M S Sriram++, J Segar++, Bindu A Bambah§ and S Lakshmibala||

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We present a comparative study of the dynamical behaviour of topological systems of recent interest, namely the non-Abelian Chern - Simons Higgs system and the Yang - Mills Chern - Simons Higgs system. By reducing the full field theories to temporal differential systems by using the assumption of spatially homogeneous fields, we study the Lyapunov exponents for two types of initial conditions. We also examine in minute detail the behaviour of the Lyapunov spectra as a function of the various coupling parameters in the system. We compare our results with those for Abelian Higgs, Yang - Mills Higgs and Yang - Mills Chern - Simons systems which have been discussed recently by other authors. The role of the various terms in the Hamiltonians for such systems in determining the order - disorder transitions is emphasized and shown to be counter-intuitive in the Yang - Mills Chern - Simons Higgs systems.


PACS

05.45.Ac Low-dimensional chaos

02.30.Yy Control theory

11.15.-q Gauge field theories

64.60.Cn Order–disorder transformations

MSC

82B26 Phase transitions (general)

81T13 Yang-Mills and other gauge theories (See also 53C07, 58E15)

Subjects

Mathematical physics

Condensed matter: structural, mechanical & thermal

Particle physics and field theory

Statistical physics and nonlinear systems

Dates

Issue 9 (7 May 1997)

Received 29 November 1995, in final form 24 January 1997



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