Abstract

A phase transition associated with dynamical properties of a type-I intermittency is analytically studied on the basis of the statistical-mechanical formalism previously proposed. At the saddle-node bifurcation point the continuous phase transition is found to occur at ${\mathit{q}}_{\mathit{c}}$ less than unity, due to the coexistence of different types of strange attractors with different measures. For nonvanishing shift parameter, crossover phenomena are discussed to obtain scaling exponents for the generalized entropies and the singularity spectrum. The exponents including a logarithmic correction are shown to depend on ${\mathit{q}}_{\mathit{c}}$, which means an absence of universality, in contrast to the usual critical phenomena.

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