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In this paper, we consider a Lewy-Stampacchia-type inequality for the fractional Laplacian on a bounded domain in Euclidean space. Using this inequality, we can show the well-posedness of fractional-type anomalous unidirectional diffusion…

Analysis of PDEs · Mathematics 2021-07-02 Pu-Zhao Kow , Masato Kimura

We consider uniform random permutations in proper substitution-closed classes and study their limiting behavior in the sense of permutons. The limit depends on the generating series of the simple permutations in the class. Under a mild…

In this paper, which is a sequel to math.DG/9902111, we analyze the limit of the p-form Laplacian under a collapse with bounded sectional curvature and bounded diameter to a singular limit space. As applications, we give results about upper…

Differential Geometry · Mathematics 2007-05-23 John Lott

We have combined the original diffusion-limited aggregation model introduced by Witten and Sander with the surface thermodynamics of the growing solid aggregate. The theory is based on the consideration of the surface chemical potential as…

Pattern Formation and Solitons · Physics 2009-10-31 Vladislav A. Bogoyavlenskiy , Natasha A. Chernova

We consider and compare two different approaches to the fractional subdiffusion and transport in washboard potentials. One is based on the concept of random fractal time and is associated with the fractional Fokker-Planck equation. Another…

Statistical Mechanics · Physics 2015-03-17 Igor Goychuk , Peter Hanggi

We consider the evolution problem associated to the infinity fractional Laplacian introduced by Bjorland, Caffarelli and Figalli (2012) as the infinitesimal generator of a non-Brownian tug-of-war game. We first construct a class of…

Analysis of PDEs · Mathematics 2023-04-26 Félix del Teso , Jørgen Endal , Espen R. Jakobsen , Juan Luis Vázquez

Phenomena as diverse as breeding bird populations, the size of U.S. firms, money invested in mutual funds, the GDP of individual countries and the scientific output of universities all show unusual but remarkably similar growth…

Physics and Society · Physics 2010-05-03 Yonathan Schwarzkopf , Robert L. Axtell , J. Doyne Farmer

The method of iterated conformal maps allows to study the harmonic measure of Diffusion Limited Aggregates with unprecedented accuracy. We employ this method to explore the multifractal properties of the measure, including the scaling of…

Statistical Mechanics · Physics 2009-11-07 Mogens H. Jensen , Anders Levermann , Joachim Mathiesen , Itamar Procaccia

In this paper, we study self-expanders for mean curvature flows. First we show the discreteness of the spectrum of the drifted Laplacian on them. Next we give a universal lower bound of the bottom of the spectrum of the drifted Laplacian…

Differential Geometry · Mathematics 2017-09-14 Xu Cheng , Detang Zhou

We introduce a simple lattice model in which percolation is constructed on top of critical percolation clusters, and show that it can be repeated recursively any number $n$ of generations. In two dimensions, we determine the percolation…

Statistical Mechanics · Physics 2015-08-05 Youjin Deng , Jesper Lykke Jacobsen , Xuan-Wen Liu

A connection between fractal dimensions of "turbulent facets" and fractal dimensions in diffusion-limited aggregation (DLA) is shown. The theoretical correspondence is elucidated and an empirical support to the above claim is given.

Mathematical Physics · Physics 2020-02-07 Asher Yahalom

Internal Diffusion Limited Aggregation is an interacting particle system that describes the growth of a random cluster governed by the boundary harmonic measure seen from an internal point. Our paper studies IDLA in $\mathbb{Z}^d$ driven by…

Probability · Mathematics 2025-10-16 Amine Asselah , Vittoria Silvestri , Lorenzo Taggi

The results of the computer simulation of the aggregates growth of the similarly charged particles in the framework of deterministic Laplacian growth model on a square lattice are presented. Cluster growth is controlled by three parameters…

Statistical Mechanics · Physics 2009-10-31 N. I. Lebovka , Y. V. Ivanenko , N. V. Vygornitskii

The thesis studies linear and semilinear Dirichlet problems driven by different fractional Laplacians. The boundary data can be smooth functions or also Radon measures. The goal is to classify the solutions which have a singularity on the…

Analysis of PDEs · Mathematics 2015-11-03 Nicola Abatangelo

We study the random growth of surfaces from within the perspective of a single column, namely, the fluctuation of the column height around the mean value, y(t)= h(t)-< h(t)>, which is depicted as being subordinated to a standard…

Adaptation and Self-Organizing Systems · Physics 2009-11-10 R. Failla , P. Grigolini , M. Ignaccolo , A. Schwettmann

The diffusion limited aggregation model (DLA) and the more general dielectric breakdown model (DBM) are solved exactly in a two dimensional cylindrical geometry with periodic boundary conditions of width 2. Our approach follows the exact…

Statistical Mechanics · Physics 2009-10-31 Boaz Kol , Amnon Aharony

A one-parametric stochastic dynamics of the interface in the quantized Laplacian growth with zero surface tension is introduced. The quantization procedure regularizes the growth by preventing the formation of cusps at the interface, and…

Statistical Mechanics · Physics 2019-07-31 Oleg Alekseev

Diffusion limited aggregation (DLA) is a well studied phenomenon in which diffusing particles cumulatively aggregate on a starting fixed seed point, forming a pattern which is fractal in structure. Here we report an interesting DLA process…

Pattern Formation and Solitons · Physics 2025-04-21 Suvrajyoti Chatterjee , Saba Firoze , Tabish Qureshi

We analyze a quasi-continuous linear chain with self-similar distribution of harmonic interparticle springs as recently introduced for one dimension (Michelitsch et al., Phys. Rev. E 80, 011135 (2009)). We define a continuum limit for one…

Fractal (or transfractal) features are common in real-life networks and are known to influence the dynamic processes taking place in the network itself. Here we consider a class of scale-free deterministic networks, called $(u,v)$-flowers,…

Statistical Mechanics · Physics 2019-03-12 Junhao Peng , Elena Agliari
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