Extended Vicsek fractals: Laplacian spectra and their applications

Abstract

Extended Vicsek fractals (EVF) are the structures constructed by introducing linear spacers into traditional Vicsek fractals. Here we study the Laplacian spectra of the EVF. In particularly, the recurrence relations for the Laplacian spectra allow us to obtain an analytic expression for the sum of all inverse nonvanishing Laplacian eigenvalues. This quantity characterizes the large-scale properties, such as the gyration radius of the polymeric structures, or the global mean-first passage time for the random walk processes. Introduction of the linear spacers leads to local heterogeneities, which reveal themselves, for example, in the dynamics of EVF under external forces.

Definitive version accepted for publication in Physical Review E

References in corpus (5)

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• Determining mean first-passage time on a class of treelike regular fractals
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Cited by in corpus (2)

• The structure of deterministic mass and surface fractals: theory and methods of analyzing small-angle scattering data
• Marginally compact hyperbranched polymer trees