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Dimension of Gibbs measures with infinite entropy

2018/12/11 by Felipe Pérez Pereira, Pereira, Felipe Pérez
Mathematics · Materials Science · Physics and Astronomy · #Mathematical Dynamics and Fractals #Crystallization and Solubility Studies #Advanced Thermodynamics and Statistical Mechanics

paper · pdf · doi:10.48550/arxiv.1812.04612

Abstract

We study the Hausdorff dimension of Gibbs measures with infinite entropy with respect to maps of the interval with countably many branches. We show that under simple conditions, such measures are symbolic-exact dimensional, and provide an almost sure value for the symbolic dimension. We also show that the lower local dimension dimension is almost surely equal to zero, while the upper local dimension is almost surely equal to the symbolic dimension. In particular, we prove that a large class of Gibbs measures with infinite entropy for the Gauss map have Hausdorff dimension zero and packing dimension equal to 1/2, and so such measures are not exact dimensional.

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