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The time variation of entropy, as an alternative to the variance, is proposed as a measure of the diffusion rate. It is shown that for linear and time-translationally invariant systems having a large-time limit for the density, at large…

统计力学 · 物理学 2013-05-24 Amir Aghamohammadi , Amir H. Fatollahi , Mohammad Khorrami , Ahmad Shariati

The transition between low and high density phases is a typical feature of systems with social interactions. This contribution focuses on simple evacuation design of one room with one entrance and one exit; four passing-through experiments…

多智能体系统 · 计算机科学 2016-01-27 Marek Bukáček , Pavel Hrabák , Milan Krbálek

The effective interaction between two probe particles in a one-dimensional driven system is studied. The analysis is carried out using an asymmetric simple exclusion process with nearest-neighbor interactions. It is found that the driven…

统计力学 · 物理学 2009-11-10 E. Levine , D. Mukamel , G. M. Schutz

The response function approach is proposed to include vibrational state in calculation of level density. The calculations show rather strong dependence of level density on the relaxation times of collective state damping.

核理论 · 物理学 2017-08-23 V. A. Plujko , A. N. Gorbachenko

We experimentally investigate the steady states of two granular assemblies differing in their material properties and allowed to exchange volume with each other under external agitation in the vicinity of their jamming transition. We…

软凝聚态物质 · 物理学 2010-02-01 F. Lechenault , Karen E. Daniels

We study the single particle density of states of a one-dimensional speckle potential, which is correlated and non-Gaussian. We consider both the repulsive and the attractive cases. The system is controlled by a single dimensionless…

无序系统与神经网络 · 物理学 2015-02-26 G. M. Falco , Andrei A. Fedorenko , Jacopo Giacomelli , Michele Modugno

We introduce a Hamiltonian dynamics for the description of long-range interacting systems in contact with a thermal bath (i.e., in the canonical ensemble). The dynamics confirms statistical mechanics equilibrium predictions for the…

统计力学 · 物理学 2009-11-11 Fulvio Baldovin , Enzo Orlandini

We consider the long time behavior of heterogeneously interacting diffusive particle systems and their large population limit. The interaction is of mean field type with weights characterized by an underlying graphon. The limit is given by…

概率论 · 数学 2021-04-06 Erhan Bayraktar , Ruoyu Wu

Different steps leading to the new functional for pairing based on natural orbitals and occupancies proposed in ref. [D. Lacroix and G. Hupin, arXiv:1003.2860] are carefully analyzed. Properties of quasi-particle states projected onto good…

核理论 · 物理学 2011-03-22 Guillaume Hupin , Denis Lacroix

The mesoscopic properties of a plasma in a cylindrical magnetic field are investigated from the view point of test-particle dynamics. When the system has enough time and spatial symmetries, a Hamiltonian of a test particle is completely…

等离子体物理 · 物理学 2019-09-19 Shun Ogawa , Xavier Leoncini , Alexei Vasiliev , Xavier Garbet

Complex systems with global interactions tend to be stable if interactions between components are sufficiently homogeneous. In biological systems, which often have small copy numbers and interactions mediated by diffusing agents, noise and…

生物物理 · 物理学 2023-04-14 Fabrizio Olmeda , Steffen Rulands

The relationship between cell density and velocity is often assumed to be negative, reflecting crowding-induced suppression of movement. However, observations across systems reveal a more nuanced picture: while some emphasize contact…

软凝聚态物质 · 物理学 2025-08-27 Hengdong Lu , Tianxiang Ma , Amin Doostmohammadi

We analyse a one-dimensional model of hard particles, within ensembles of trajectories that are conditioned (or biased) to atypical values of the time-averaged dynamical activity. We analyse two phenomena that are associated with these…

统计力学 · 物理学 2015-11-18 Ian R. Thompson , Robert L. Jack

During their lifetimes, individuals in populations pass through different states, and the notion of an occupancy time describes the amount of time an individual spends in a given set of states. Questions related to this idea were studied in…

概率论 · 数学 2020-12-02 George Chappelle , Alan Hastings , Martin Rasmussen

We study both analytically and numerically how the electronic structure and the transport properties of a two-dimensional disordered system are modified in the presence of resonances. The energy dependence of the density of states and the…

无序系统与神经网络 · 物理学 2009-10-31 Brahim Elattari , Tsampikos Kottos

Certain density correlators, measurable via various experimental techniques, are studied in the context of the vulcanization transition. It is shown that these correlators contain essential information about both the vulcanization…

无序系统与神经网络 · 物理学 2009-10-31 Weiqun Peng , Paul M. Goldbart

Nearly-elastic model systems with one or two degrees of freedom are considered: the system is undergoing a small loss of energy in each collision with the "wall". We show that instabilities in this purely deterministic system lead to…

概率论 · 数学 2012-08-31 Mark Freidlin , Wenqing Hu

We derive a powerful yet simple method for analyzing the local density of states in gapless one dimensional fermionic systems, including extensions such as momentum dependent interaction parameters and hard-wall boundaries. We study the…

强关联电子 · 物理学 2010-01-19 Imke Schneider , Sebastian Eggert

We analyze the popular ``state-space'' class of algorithms for detecting casual interaction in coupled dynamical systems. These algorithms are often justified by Takens' embedding theorem, which provides conditions under which relationships…

信号处理 · 电气工程与系统科学 2023-08-15 Matthew O'Shaughnessy , Mark Davenport , Christopher Rozell

An important input into reaction theory is the density of states or the level density. Spectral distribution theory (also known as nuclear statistical spectroscopy) characterizes the secular behavior of the density of states through moments…

核理论 · 物理学 2015-06-26 Edgar Teran , Calvin W. Johnson