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Phase transitions for the multifractal analysis of self-similar measures

Benoit Testud
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Abstract

We study the multifractal analysis of a class of self-similar measures with overlaps. This class, for which we obtain explicit formulae for the L^q spectrum tau(q) as well as the singularity spectrum f(alpha), is sufficiently large to point out new phenomena concerning the multifractal structure of self-similar measures. We show, that unlike the classical quasi-Bernoulli case, the L^q spectrum can have an arbitrarely large number of non-differentiability points (phase transitions). These singularities occur only for the negative values of q and yield to measures that do not satisfy the multifractal formalism. The weak quasi-Bernoulli property is the key point of most of the arguments.

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Benoit Testud. 2006-04-03. Phase transitions for the multifractal analysis of self-similar measures. https://doi.org/10.1088/0951-7715/19/5/009

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