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Free Path Lengths in Quasicrystals
Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Mathematics.
2014 (English)In: Communications in Mathematical Physics, ISSN 0010-3616, E-ISSN 1432-0916, Vol. 330, no 2, 723-755 p.Article in journal (Refereed) Published
Abstract [en]

Previous studies of kinetic transport in the Lorentz gas have been limited to cases where the scatterers are distributed at random (e.g., at the points of a spatial Poisson process) or at the vertices of a Euclidean lattice. In the present paper we investigate quasicrystalline scatterer configurations, which are non-periodic, yet strongly correlated. A famous example is the vertex set of a Penrose tiling. Our main result proves the existence of a limit distribution for the free path length, which answers a question of Wennberg. The limit distribution is characterised by a certain random variable on the space of higher dimensional lattices, and is distinctly different from the exponential distribution observed for random scatterer configurations. The key ingredients in the proofs are equidistribution theorems on homogeneous spaces, which follow from Ratner's measure classification.

Place, publisher, year, edition, pages
2014. Vol. 330, no 2, 723-755 p.
National Category
Mathematics Physical Sciences
URN: urn:nbn:se:uu:diva-229417DOI: 10.1007/s00220-014-2011-3ISI: 000338218400008OAI: oai:DiVA.org:uu-229417DiVA: diva2:738011
Available from: 2014-08-15 Created: 2014-08-07 Last updated: 2014-08-15Bibliographically approved

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Strömbergsson, Andreas
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