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We construct the temporal network using the two-dimensional active particle systems which are described by the Vicsek model. The bursts of the interevent times for a specific pair of particles are investigated numerically. We find that for…

统计力学 · 物理学 2022-10-18 Wei Zhong , Youjin Deng , Daxing Xiong

We introduce a model of evolving preferential attachment trees where vertices are assigned weights, and the evolution of a vertex depends not only on its own weight, but also on the weights of its neighbours. We study the distribution of…

概率论 · 数学 2021-01-11 Nikolaos Fountoulakis , Tejas Iyer

One of the most remarkable observations in dense active matter systems is the appearance of long-range velocity correlations without any explicit aligning interaction (of e.g.\ Vicsek type). Here we show that this kind of long range…

软凝聚态物质 · 物理学 2023-02-28 Leila Abbaspour , Rituparno Mandal , Peter Sollich , Stefan Klumpp

We consider a stochastic individual based model where each predator searches during a random time and then manipulates its prey or rests. The time distributions may be non-exponential. An age structure allows to describe these interactions…

动力系统 · 数学 2021-03-31 Vincent Bansaye , Bertand Cloez

In this paper we consider a class of interacting particle systems on dynamic random networks, in which the joint dynamics of vertices and edges acts as one-way feedback, i.e., edges appear and disappear over time depending on the state of…

概率论 · 数学 2025-11-06 Simone Baldassarri , Jiesen Wang

The double Pareto distribution is a heavy-tailed distribution with a power-law tail, that is generated via geometric Brownian motion with an exponentially distributed observation time. In this study, we examine a modified model wherein the…

统计力学 · 物理学 2024-04-30 Ken Yamamoto , Takashi Bando , Hirokazu Yanagawa , Yoshihiro Yamazaki

The effects of the propagation of particles which have a finite life-time and an according broad distribution in their mass spectrum are discussed in the context of a transport descriptions. In the first part some example cases of mesonic…

核理论 · 物理学 2009-11-11 J. Knoll , F. Riek , Yu. B. Ivanov , D. N. Voskresensky

The evolution of material points interacting via gravitational force in 3D space was investigated. At initial moment points with masses of 2.48 Sun masses are randomly distributed inside a cube with an edge of 5 light-years. The modeling…

统计力学 · 物理学 2017-04-05 A. V. Melkikh , E. A. Melkikh , V. A Kozhevnikov

We study interacting systems of linear Brownian motions whose drift vector at every time point is determined by the relative ranks of the coordinate processes at that time. Our main objective has been to study the long range behavior of the…

概率论 · 数学 2008-01-22 Soumik Pal , Jim Pitman

Starting from the model of continuous time random walk, we focus our interest on random walks in which the probability distributions of the waiting times and jumps have fat tails characterized by power laws with exponent between 0 and 1 for…

概率论 · 数学 2008-01-03 Rudolf Gorenflo , Entsar A. A. Abdel-Rehim

We analytically and numerically study the effect of finite spatial boundaries on the Takayasu model of diffusing and aggregating particles with steady monomer input in one dimension. Exact expressions are derived for the steady-state…

统计力学 · 物理学 2025-11-13 Rohan Banerjee Ravindran , R. Rajesh

Using the standard Vicsek model, I show how the macroscopic transport equations can be systematically derived from microscopic collision rules. The approach starts with the exact evolution equation for the N-particle probability…

统计力学 · 物理学 2017-05-22 Thomas Ihle

Many recent large-scale studies of interaction networks have focused on networks of accumulated contacts. In this paper we explore social networks of ongoing relationships with an emphasis on dynamical aspects. We find a distribution of…

无序系统与神经网络 · 物理学 2009-11-10 Petter Holme

Dynamical properties are studied for escaping particles, injected through a hole in an oval billiard. The dynamics is considered for both static and periodically moving boundaries. For the static boundary, two different decays for the…

混沌动力学 · 物理学 2015-06-04 Edson D. Leonel , Carl P. Dettmann

We propose a unifying theoretical framework for the analysis of first-passage time distributions in two important classes of stochastic processes in which the diffusivity of a particle evolves randomly in time. In the first class of…

统计力学 · 物理学 2019-11-05 D. S. Grebenkov

We study preferential attachment mechanisms in random graphs that are parameterized by (i) a constant bias affecting the degree-biased distribution on the vertex set and (ii) the distribution of times at which new vertices are created by…

概率论 · 数学 2017-10-09 Benjamin Bloem-Reddy , Peter Orbanz

Nonintersecting motion of Brownian particles in one dimension is studied. The system is constructed as the diffusion scaling limit of Fisher's vicious random walk. N particles start from the origin at time t=0 and then undergo mutually…

统计力学 · 物理学 2009-11-07 Taro Nagao , Makoto Katori , Hideki Tanemura

The circular Dyson Brownian motion model refers to the stochastic dynamics of the log-gas on a circle. It also specifies the eigenvalues of certain parameter-dependent ensembles of unitary random matrices. This model is considered with the…

统计力学 · 物理学 2016-08-31 P. J. Forrester , T. Nagao

We study a system of self-propelled particles whose alignment with neighbors depends on the degree of local alignment. We show that such a local conformity interaction naturally yields a Vicsek-type model with pairwise and three-body…

统计力学 · 物理学 2025-12-23 Iván León , Riccardo Muolo , Hiroya Nakao , Keisuke Taga

Empirical contact networks or interaction networks demonstrate peculiar characteristics stemming from the fundamental social, psychological, physical mechanisms governing human interactions. Although these mechanisms are complex, we test…

物理与社会 · 物理学 2025-03-20 Razieh Masoumi , Juliette Gambaudo , Mathieu Génois