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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…

Statistical Mechanics · Physics 2016-11-07 Maxim Dolgushev , Hongxiao Liu , Zhongzhi Zhang

It is well-known that stochastic processes on fractal spaces or in certain random media exhibit anomalous heat kernel behaviour. One manifestation of such irregular behaviour is the presence of fluctuations in the short- or long-time…

Probability · Mathematics 2023-10-18 Sebastian Andres , David Croydon , Takashi Kumagai

This is a review of the properties of spectral fluctations in disordered metals, their relation with Random Matrix Theory and semiclassical picture. We also review the physics of persistent currents in mesoscopic isolated rings, the…

Mesoscale and Nanoscale Physics · Physics 2008-02-03 Gilles Montambaux

A fractafold, a space that is locally modeled on a specified fractal, is the fractal equivalent of a manifold. For compact fractafolds based on the Sierpinski gasket, it was shown by the first author how to compute the discrete spectrum of…

Functional Analysis · Mathematics 2018-06-29 Robert Strichartz , Alexander Teplyaev

This paper develops a general framework for analyzing asymptotics of $V$-statistics. Previous literature on limiting distribution mainly focuses on the cases when $n \to \infty$ with fixed kernel size $k$. Under some regularity conditions,…

Machine Learning · Statistics 2020-05-08 Zhengze Zhou , Lucas Mentch , Giles Hooker

In the present work we explore resistive circuits where the individual resistors are arranged in fractal-like patterns. These circuits have some of the characteristics typically found in geometric fractals, namely self-similarity and scale…

We introduce hybrid fractals as a class of fractals constructed by gluing several fractal pieces in a specific manner and study energy forms and Laplacians on them. We consider in particular a hybrid based on the $3$-level Sierpinski…

Functional Analysis · Mathematics 2018-04-17 Patricia Alonso Ruiz , Yuming Chen , Haotian Gu , Robert S. Strichartz , Zirui Zhou

In this paper we show that the scattered field of a bichromatically driven V-type three-level atom exhibit asymmetry and large violation of classical bounds in amplitude-intensity correlations. These features result from the…

Quantum Physics · Physics 2017-10-06 L. Gutiérrez , H. M. Castro-Beltrán , R. Román-Ancheyta , L. Horvath

In this paper, we have firstly proposed a new one-dimensional variable frequency photonic crystals (VFPCs), and calculated the transmissivity and the electronic field distribution of VFPCs with and without defect layer, and considered the…

Optics · Physics 2015-08-19 Xiang-Yao Wu , Ji Ma , Xiao-Jing Liu , Jing-Hai Yang , Hong Li , Wan-Jin Chen

We consider a class of random self-similar fractals based on code trees which includes random recursive, homogeneous and V-variable fractals and many more. For such random fractals we consider mean values of the Lipschitz-Killing curvatures…

Probability · Mathematics 2025-05-09 Jan Rataj , Steffen Winter , Martina Zähle

We have measured the local and global statistics of singularity velocity, v, and have related these through the spatial correlation function of v. The distribution of v is a mixture of a mesoscopic distribution of global change in the…

Mesoscale and Nanoscale Physics · Physics 2013-05-29 Sheng Zhang , Yitzchak Lockerman , Azriel Z. Genack

A set of interpolating functions of the type f(v)={(sin[v pi/2])/(v pi/2)}^n is analyzed in the context of the smoothed-particle hydrodynamics (SPH) technique. The behaviour of these kernels for several values of the parameter n has been…

Astrophysics · Physics 2011-08-31 Ruben M. Cabezon , Domingo Garcia-Senz , Antonio Relaño

We theoretically and numerically demonstrate that completely integrable scattering processes may exhibit fractal transmission fluctuations, due to typical spectral properties of integrable systems. Similar properties also occur with…

Mesoscale and Nanoscale Physics · Physics 2016-08-31 Italo Guarneri , Marcello Terraneo

A family of marginally-rigid (isostatic) spring networks with fractal structure up to a controllable length was devised and the viscoelastic spectra $G^{*}(\omega)$ calculated. Two non-trivial scaling regimes were observed,…

Soft Condensed Matter · Physics 2022-07-13 David Head

This survey article is dedicated to some families of fractals that were introduced and studied during the last decade, more precisely, families of Sierpi\'nski carpets: limit net sets, generalised Sierpi\'nski carpets and labyrinth…

General Topology · Mathematics 2017-07-19 Ligia L. Cristea

We study the convergence of the parameter family of series $$V_{\alpha,\beta}(t)=\sum_{p}p^{-\alpha}\exp(2\pi i p^{\beta}t),\quad \alpha,\beta \in \mathbb{R}_{>0},\; t \in [0,1)$$ defined over prime numbers $p$, and subsequently, their…

Dynamical Systems · Mathematics 2017-08-28 Dimitris Vartziotis , Doris Bohnet

Direct measurements of the velocity in turbulent convection of $SF_6$ near its gas-liquid critical point by light scattering on the critical density fluctuations were conducted. The temperature, velocity and cross frequency power spectra in…

chao-dyn · Physics 2009-10-31 Shay Ashkenazi , Victor Steinberg

We develop the theory of interstellar scintillation as caused by an irregular plasma having a power-law spatial density spectrum with a spectral exponent of 4 corresponding to a medium with abrupt changes in its density. An ``outer scale''…

Astrophysics · Physics 2009-10-31 Hendrik Lambert , Barney Rickett

Fluctuations of the thermal or classical component of the van der Waals force between two dielectric slabs, modelled as an ensemble of polarizable dipoles which interact via the usual electrostatic dipole-dipole interaction, are evaluated.…

Statistical Mechanics · Physics 2015-06-15 D. S. Dean , V. A. Parsegian , R. Podgornik

Fractals define a new and interesting realm for a discussion of basic phenomena in quantum field theory and statistical mechanics. This interest results from specific properties of fractals, e.g., their dilatation symmetry and the…

Statistical Mechanics · Physics 2012-10-26 Eric Akkermans