New Universality of Lyapunov Spectra in Hamiltonian Systems

Details New Universality of Lyapunov Spectra in Hamiltonian Systems New Universality of Lyapunov Spectra in Hamiltonian Systems

1997-05-06

arxiv.org/abs/chao-dyn/9705008v2

J.Phys.A Vol.31 (1998) 195-207

Nonlinear Sciences

Chaotic Dynamics

19 pages, 16 Encapsulated Postscript figures, LaTeX (100 kb)

Scientific paper

10.1088/0305-4470/31/1/020

A new universality of Lyapunov spectra {\lambda_i} is shown for Hamiltonian systems. The universality appears in middle energy regime and is different from another universality which can be reproduced by random matrices in the following two points. One is that the new universality appears in a limited range of large i/N rather than the whole range, where N is degrees of freedom. The other is Lyapunov spectra do not behave linearly while random matrices give linear behavior even on 3D lattice. Quadratic terms with smaller nonlinear terms of potential functions play an intrinsic role in the new universality.

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