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An energy window study of light transmission-disorder relationship in 1D photonic structures
While the light transmission of photonic crystals is characterized by the
photonic band gap, the one of disordered photonic structures is typified by a
multiplicity of transmission depths. The total transmission over a range of
wavelengths is related to the width of such range, but also to the type of
disorder. Less homogeneous disordered structures transmit more light than the
ordered counterpart regardless of the wavelengths range width. More homogeneous
disordered structures transmit more light than the ordered counterpart only
above a certain value of the width. We studied this behaviour with a
statistical analysis over 5000 permutations of structures for each wavelength
width and for each homogeneity degree (Shannon-Wiener index).Comment: 8 pages, 4 figure
Complexity spectrum of some discrete dynamical systems
We first study birational mappings generated by the composition of the matrix
inversion and of a permutation of the entries of matrices. We
introduce a semi-numerical analysis which enables to compute the Arnold
complexities for all the possible birational transformations. These
complexities correspond to a spectrum of eighteen algebraic values. We then
drastically generalize these results, replacing permutations of the entries by
homogeneous polynomial transformations of the entries possibly depending on
many parameters. Again it is shown that the associated birational, or even
rational, transformations yield algebraic values for their complexities.Comment: 1 LaTex fil
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