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arXiv · 1710.06812

Self-similar measures: asymptotic bounds for the dimension and Fourier decay of smooth images

Carolina A. Mosquera·Pablo Shmerkin
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Abstract

R. Kaufman and M. Tsujii proved that the Fourier transform of self-similar measures has a power decay outside of a sparse set of frequencies. We present a version of this result for homogeneous self-similar measures, with quantitative estimates, and derive several applications: (1) non-linear smooth images of homogeneous self-similar measures have a power Fourier decay, (2) convolving with a homogeneous self-similar measure increases correlation dimension by a quantitative amount, (3) the dimension and Frostman exponent of (biased) Bernoulli convolutions tend to $1$ as the contraction ratio tends to $1$, at an explicit quantitative rate.

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Carolina A. Mosquera, Pablo Shmerkin. 2017-10-18. Self-similar measures: asymptotic bounds for the dimension and Fourier decay of smooth images. https://arxiv.org/abs/1710.06812

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