Intermittency at critical transitions and aging dynamics at edge of chaos

Details Intermittency at critical transitions and aging dynamics at edge of chaos Intermittency at critical transitions and aging dynamics at edge of chaos

2005-01-17

arxiv.org/abs/cond-mat/0501367v1

Pramana 64, 947 (2005)

Physics

Condensed Matter

Statistical Mechanics

Proceedings of: STATPHYS 2004 - 22nd IUPAP International Conference on Statistical Physics, National Science Seminar Complex,

Scientific paper

We recall that, at both the intermittency transitions and at the Feigenbaum attractor in unimodal maps of non-linearity of order $\zeta >1$, the dynamics rigorously obeys the Tsallis statistics. We account for the $q$-indices and the generalized Lyapunov coefficients $\lambda_{q}$ that characterize the universality classes of the pitchfork and tangent bifurcations. We identify the Mori singularities in the Lyapunov spectrum at the edge of chaos with the appearance of a special value for the entropic index $q$. The physical area of the Tsallis statistics is further probed by considering the dynamics near criticality and glass formation in thermal systems. In both cases a close connection is made with states in unimodal maps with vanishing Lyapunov coefficients.

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