Scaling relations and critical exponents for two dimensional two parameter maps

D. Stynes, W. G. Hanan, S. Pouryahya and D. M. Heffernan ()

The European Physical Journal B: Condensed Matter and Complex Systems, 2010, vol. 77, issue 4, 469-478

Abstract: In this paper we calculate the critical scaling exponents describing the variation of both the positive Lyapunov exponent, λ + , and the mean residence time, $\langle$ τ $\rangle$ , near the second order phase transition critical point for dynamical systems experiencing crisis-induced intermittency. We study in detail 2-dimensional 2-parameter nonlinear quadratic mappings of the form: X n+1 =f 1 (X n , Y n ; A, B) and Y n+1 =f 2 (X n , Y n ; A, B) which contain in their parameter space (A, B) a region where there is crisis-induced intermittent behaviour. Specifically, the Henon, the Mira 1, and Mira 2 maps are investigated in the vicinity of the crises. We show that near a critical point the following scaling relations hold: $\langle$ τ $\rangle$ ~ |A – A c | -γ , (λ + – λ c + ) ~ |A – A c | βA and (λ + – λ c + ) ~ |B – B c | βB . The subscript c on a quantity denotes its value at the critical point. All these maps exhibit a chaos to chaos second order phase transition across the critical point. We find these scaling exponents satisfy the scaling relation γ=β B ( $\frac{1}{\beta_{A}}$ – 1), which is analogous to Widom’s scaling law. We find strong agreement between the scaling relationship and numerical results. Copyright EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2010

Date: 2010
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DOI: 10.1140/epjb/e2010-00265-4

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