Spectral cocycle for substitution tilings

Boris Solomyak, Rodrigo Treviño

Research output: Contribution to journalArticlepeer-review


The construction of a spectral cocycle from the case of one-dimensional substitution flows [A. I. Bufetov and B. Solomyak. A spectral cocycle for substitution systems and translation flows. J. Anal. Math. 141(1) (2020), 165-205] is extended to the setting of pseudo-self-similar tilings in ℝd, allowing expanding similarities with rotations. The pointwise upper Lyapunov exponent of this cocycle is used to bound the local dimension of spectral measures of deformed tilings. The deformations are considered, following the work of Treviño [Quantitative weak mixing for random substitution tilings. Israel J. Math., to appear], in the simpler, non-random setting. We review some of the results of Treviño in this special case and illustrate them on concrete examples.

Original languageEnglish
JournalErgodic Theory and Dynamical Systems
StateAccepted/In press - 2023

Bibliographical note

Publisher Copyright:
© The Author(s), 2023. Published by Cambridge University Press.


  • spectral cocycle
  • substitution tiling
  • tiling cohomology


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