Abstract
The Lyapunov characteristic exponents play a crucial role in the description of the behavior of dynamical systems. They measure the average rate of convergence or divergence of orbits starting from nearby initial points. Therefore, they can be used to analyze the stability of limits sets and check sensitive dependence on initial conditions, that is, the presence of chaotic attractors. In this paper we explore some properties of Lyapunov exponents of autonomous almost periodic Hamiltonian systems. We study the behavior of the Lyapunov exponents under smooth conjugacy. We show that, due to almost periodicity, the Lyapunov exponents of the almost periodic Hamiltonian system are invariant under a smooth conjugacy. In addition, we obtain effective estimates of Lyapunov exponents by the mean value of the largest eigenvalue of the Lie Bracket \(\left[ J,H^{\prime \prime }\right] \). Finally, two numerical examples are given to indicate the validity of the obtained estimates.
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Benettin, G., Galgani, I., Giorgilli, A., Strelcyn, J.M.: Lyapunov characteristic exponents for smooth dynamical systems and for hamiltonians systems. Part 1: theory. Meccanica 15(1), 9–20 (1980)
Benettin, G., Galgani, I., Giorgilli, A., Strelcyn, J.M.: Lyapunov characteristic exponents for smooth dynamical systems and for hamiltonians systems. Part 2: a method for computing all of them. Meccanica 15(1), 21–30 (1980)
Bohr, H.: Almost periodic functions. Julius Springer, Berlin (1933)
Bruin, H., Luzzatto, S.: Topological invariance of the sign of the Lyapunov exponents in one-dimensional maps. Proc. Am. Math. Soc. 134, 265–272 (2005)
Changpin, L., Guanrong, C.: Estimating the Lyapunov exponents of discrete systems. Chaos 14, 343 (2004)
Changpin, L., Xiaohua, X.: On the bound of the Lyapunov exponents for continuous systems. Chaos 14, 557 (2004)
Chérif, F.: Theoretical calculation of Lyapunov exponents for almost periodic Hamiltonian systems. IAENG Int. J. Appl. Math. 41(1), 11–16 (2011)
Chérif, F.: On the spectra of almost periodic symmetric positive definite matrices functions. Appl. Math. Sci. 6(24), 1191–1197 (2012)
Contopoulos, G., Galgani, I., Giorgilli, A.: On the number of isolating integrals for Hamiltonian systems. Phys. Rev. A 18, 1183–1189 (1978)
Edneral, V.: A symbolic approximation of periodic solutions of the Henon–Heiles system by the normal form method. Math. Comput. Simul. 45, 445–463 (1998)
Eichhorn, R., Linz, S., Hanggi, J.: Transformation invariance of Lyapunov exponents. Chaos Soliton. Fract. 12, 1377–1383 (2001)
Hale, J.K.: Ordinary differential equations, Krieger, Malabur, FL, 1980 trajectories. Int. J. Bifurcat. Chaos 15(12), 4075–4080 (2005)
Hénon, M., Heiles, C.: The applicability of the third integral of motion: some numerical experiments. Astron. J. 69, 73–79 (1964)
Hong, J.: The computation of Lyapunov exponents for periodic trajectories. Int. J. Bifurcat. Chaos 15(12), 4075–4080 (2005)
Jilali, M., Zinoun, F.: Normal form methods for symbolic creation of approximate solutions of nonlinear dynamical systems. Math. Comput. Simul. 57, 253–289 (2001)
Kostov, N.A., Gerdjikov, V.S., Mioc, V.: Exact solutions for a class of integrable Henon–Heiles-type systems. J. Math. Phys. 51, 2 (2010)
Oseledec, V.I.: A multiplicative ergodic theorem, Lyapunov characteristic numbers for dynamical systems. Trans. Mosc. Math. Soc. 19, 197 (1968)
Skokos, C., Bountis, C., Antonopoulos, C.: Geometrical properties of local dynamics in Hamiltonian systems: the Generalized Alignment Index (GALI) method. Phys. D 231, 30–54 (2007)
Skokos, C.: The Lyapunov characteristic exponents and their computation. Lect. Notes Phys. 790, 63135 (2010)
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I would like to thank two anonymous reviewers for their careful reading and providing pertinent suggestions.
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Chérif, F. Some Qualitative Properties of Lyapunov Exponents for Almost Periodic Hamiltonian Systems. Differ Equ Dyn Syst 23, 57–67 (2015). https://doi.org/10.1007/s12591-013-0180-8
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DOI: https://doi.org/10.1007/s12591-013-0180-8