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The scaling properties of the roughness of surfaces grown by two different processes randomly alternating in time, are addressed. The duration of each application of the two primary processes is assumed to be independently drawn from given…

统计力学 · 物理学 2009-11-07 Subhadip Raychaudhuri , Yonathan Shapir

We conduct athermal simulations of freely-cooling, viscous soft spheres around the jamming transition density \phi_{J}, and find evidence for a growing length \xi(t) that governs relaxation to mechanical equilibrium. \xi(t) is manifest in…

软凝聚态物质 · 物理学 2009-11-13 D. A. Head

Corrections to scaling, associated with deviations of the order parameter from the scaling morphology in the initial state, are studied for systems with O(n) symmetry at zero temperature in phase-ordering kinetics. Including corrections to…

统计力学 · 物理学 2009-10-31 N. P. Rapapa , A. J. Bray

The dependence of the scaling properties of the structure factor on space dimensionality, range of interaction, initial and final conditions, presence or absence of a conservation law is analysed in the framework of the large-N model for…

凝聚态物理 · 物理学 2009-10-22 Antonio Coniglio , Patrizia Ruggiero , Marco Zannetti

We consider measurable functions $f$ on $\mathbb{R}$ that tile simultaneously by two arithmetic progressions $\alpha \mathbb{Z}$ and $\beta \mathbb{Z}$ at respective tiling levels $p$ and $q$. We are interested in two main questions: what…

经典分析与常微分方程 · 数学 2024-09-11 Mark Mordechai Etkind , Nir Lev

Scaling violations are found in the phase-ordering two-dimensional Heisenberg [$O(3)$] model, which has non-singular topological textures, under dissipative non-conserved dynamics. Three separate length-scales are found: $L_T$ characterizes…

凝聚态物理 · 物理学 2016-08-31 A. D. Rutenberg

Statistical systems displaying a strongly anisotropic or dynamical scaling behaviour are characterized by an anisotropy exponent theta or a dynamical exponent z. For a given value of theta, we construct local scale transformations which can…

高能物理 - 理论 · 物理学 2015-06-26 Malte Henkel

Two-dimensional $CP^{N-1}$ models are investigated by Monte Carlo methods on the lattice, for values of $N$ ranging from 2 to 21. Scaling and rotation invariance are studied by comparing different definitions of correlation length $\xi$.…

高能物理 - 格点 · 物理学 2009-10-22 Massimo Campostrini , Paolo Rossi , Ettore Vicari

We study finite-size effects at first-order quantum transitions (FOQTs). We show that the low-energy properties show a finite-size scaling (FSS) behavior, the relevant scaling variable being the ratio of the energy associated with the…

统计力学 · 物理学 2014-08-20 Massimo Campostrini , Jacopo Nespolo , Andrea Pelissetto , Ettore Vicari

Scaling laws for the propulsive performance of rigid foils undergoing oscillatory heaving and pitching motions are presented. Water tunnel experiments on a nominally two-dimensional flow validate the scaling laws, with the scaled data for…

流体动力学 · 物理学 2017-06-09 Daniel Floryan , Tyler Van Buren , Clarence W. Rowley , Alexander J. Smits

We propose a scaling hypothesis for pattern-forming systems in which modulation of the order parameter results from the competition between a short-ranged interaction and a long-ranged interaction decaying with some power $\alpha$ of the…

软凝聚态物质 · 物理学 2011-01-17 O. Portmann , A. Goelzer , N. Saratz , O. V. Billoni , D. Pescia , A. Vindigni

This paper reviews some of the phenomenological models which have been introduced to incorporate the scaling properties of financial data. It also illustrates a microscopic model, based on heterogeneous interacting agents, which provides a…

统计力学 · 物理学 2009-10-31 Giulia Iori

In the study of complex networks (systems), the scaling phenomenon of flow fluctuations refers to a certain power-law between the mean flux (activity) $<F_i>$ of the $i$th node and its variance $\sigma_i$ as $\sigma_i \propto < F_{i} >…

数据分析、统计与概率 · 物理学 2009-05-08 Yudong Chen , Li Li , Yi Zhang , Jianming Hu

We study several one dimensional step flow models. Numerical simulations show that the slope of the profile exhibits scaling in all cases. We apply a scaling ansatz to the various step flow models and investigate their long time evolution.…

材料科学 · 物理学 2009-10-31 Navot Israeli , Hyeong-Chai Jeong , Daniel Kandel , John D. Weeks

We study the dynamic scaling properties of an aggregation model in which particles obey both diffusive and driven ballistic dynamics. The diffusion constant and the velocity of a cluster of size $s$ follow $D(s) \sim s^\gamma$ and $v(s)…

统计力学 · 物理学 2009-10-31 E. K. O. Hellen , T. P. Simula , M. J. Alava

In this paper we study the double scaling limit of the multi-orientable tensor model. We prove that, contrary to the case of matrix models but similarly to the case of invariant tensor models, the double scaling series are convergent. We…

高能物理 - 理论 · 物理学 2018-06-22 Razvan Gurau , Adrian Tanasa , Donald R. Youmans

The equilibrium and nonequilibrium properties of ferromagnetic systems may be affected by the long-range nature of the coupling interaction. Here we study the phase separation process of a one-dimensional Ising model in the presence of a…

统计力学 · 物理学 2019-08-06 Federico Corberi , Eugenio Lippiello , Paolo Politi

Downstream scaling laws aim to predict task performance at larger scales from the model's performance at smaller scales. Whether such prediction should be possible is unclear: some works discover clear linear scaling trends after simple…

计算与语言 · 计算机科学 2025-10-10 Nicholas Lourie , Michael Y. Hu , Kyunghyun Cho

The scaling function $F(s)$ in detrended fluctuation analysis (DFA) scales as $F(s)\sim s^{H}$ for stochastic processes with Hurst exponents $H$. We prove this scaling law for both stationary stochastic processes with $0<H<1$, and…

统计理论 · 数学 2018-02-20 Ola Løvsletten

Aging in a two-dimensional Ising spin model with both ferromagnetic exchange and antiferromagnetic dipolar interactions is established and investigated via Monte Carlo simulations. The behaviour of the autocorrelation function $C(t,t_w)$ is…

统计力学 · 物理学 2009-10-31 Julio H. Toloza , Francisco A. Tamarit , Sergio A. Cannas