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We show that the generalized diffusion coefficient of a subdiffusiveintermittent map is a fractal function of control parameters. A modifiedcontinuous time random walk theory yields its coarse functional form andcorrectly describes a dynamical phase transition from normal to anomalousdiffusion marked by strong suppression of diffusion. Similarly, the probabilitydensity of moving particles is governed by a time-fractional diffusion equationon coarse scales while exhibiting a specific fine structure. Approximationsbeyond stochastic theory are derived from a generalized Taylor-Green-Kuboformula.Comment: 4 pages, 3 eps figure

Understanding anomalous transport in intermittent maps: From continuous-time random walks to fractals