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Diffractive point sets with entropy

Michael Baake-+ and Robert V Moody++

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After a brief historical survey, this paper introduces the notion of entropic model sets (cut and project sets), and, more generally, the notion of diffractive point sets with entropy. Such sets may be thought of as generalizations of lattice gases. We show that taking the site occupation of a model set stochastically results, with probabilistic certainty, in well-defined diffractive properties augmented by a constant diffuse background. We discuss both the case of independent, but identically distributed (i.i.d.) random variables and that of independent, but different (i.e. site dependent) random variables. Several examples are shown.


PACS

05.50.+q Lattice theory and statistics (Ising, Potts, etc.)

61.44.-n Semi-periodic solids

02.50.Cw Probability theory

02.50.Fz Stochastic analysis

MSC

60B15 Probability measures on groups, Fourier transforms, factorization

06B05 Structure theory

52C23 Quasicrystals, aperiodic tilings

60Hxx Stochastic analysis (See also 58J65)

Subjects

Computational physics

Condensed matter: structural, mechanical & thermal

Statistical physics and nonlinear systems

Dates

Issue 45 (13 November 1998)

Received 18 February 1998



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