Diffraction of Return Time Measures
Diffraction of Return Time Measures
复制标题
返回时间测量的衍射
DOI:
10.1007/s10955-018-2196-5
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发表时间:
2019
影响因子:
1.6
通讯作者:
M. Steffens
中科院分区:
文献类型:
--
作者:
M. Kesseböhmer;A. Mosbach;T. Samuel;M. Steffens
LettingTdenote an ergodic transformation of the unit interval and lettingdenote an observable, we construct thef-weighted return time measurefor a reference pointas the weighted Dirac comb with support inand weightsatand ifTis non-invertible, then we set the weights equal to zero for allGiven such a Dirac comb, we are interested in its diffraction spectrum and analyse it for the dependence on the underlying transformation. Under certain regularity conditions imposed on the interval map and the observable we explicitly calculate the diffraction ofwhich consists of a trivial atom and an absolutely continuous part, almost surely with respect toThis contrasts what occurs in the setting of regular model sets arising from cut and project schemes and deterministic incommensurate structures. As a prominent example of non-mixing transformations, we consider rigid rotations. In this situation we observe that the diffraction ofis pure point, almost surely with respect toand, if the rotation number is irrational and the observable is Riemann integrable, then the diffraction ofis independent ofFinally, for a converging sequence of rotation numbers, we provide new results concerning the limiting behaviour of the associated diffractions.
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期刊:
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