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The microscopic model in which nodes interacting with each other are statistical systems is introduced. The nodes conditions are connected with a string of distinct microscopic configurations and depend on external parameters (pressure and…

统计力学 · 物理学 2007-05-23 V. Stepanov

We use a simplified model which is based on the same physics as inherent in most statistical models for nuclear multifragmentation. The simplified model allows exact calculations for thermodynamic properties of systems of large number of…

核理论 · 物理学 2008-11-26 S. Das Gupta , A. Z. Mekjian

A new formulation of statistical mechanics is put forward according to which a random variable characterizing a macroscopic body is postulated to be infinitely divisible. It leads to a parametric representation of partition function of an…

数学物理 · 物理学 2008-11-06 E. D. Belokolos

This paper explores the connection between dynamical system properties and statistical physics of ensembles of such systems. Simple models are used to give novel phase transitions; particularly for finite N particle systems with many…

统计力学 · 物理学 2007-11-06 Ajay Patwardhan

We study in further detail particle models displaying a boundary-induced absorbing state phase transition [Phys. Rev. E. {\bf 65}, 046104 (2002) and Phys. Rev. Lett. {\bf 100}, 165701 (2008)] . These are one-dimensional systems consisting…

统计力学 · 物理学 2009-04-25 A. C. Barato , J. A. Bonachela , C. E. Fiore , H. Hinrichsen , M. A. Muñoz

In an open system, the geometric phase should be described by a distribution. We show that a geometric phase distribution for open system dynamics is in general ambiguous, but the imposition of reasonable physical constraints on the…

量子物理 · 物理学 2007-05-23 K. -P. Marzlin , S. Ghose , B. C. Sanders

We present a phase field crystal model for driven systems which describes competing effects between thermally activated diffusional processes and those driven by externally imposed ballistic events. The model demonstrates how the mesoscopic…

材料科学 · 物理学 2015-06-11 Nana Ofori-Opoku , Jeffrey J. Hoyt , Nikolas Provatas

Discrete time crystals are related to non-equilibrium dynamics of periodically driven quantum many-body systems where the discrete time translation symmetry of the Hamiltonian is spontaneously broken into another discrete symmetry.…

量子气体 · 物理学 2018-05-31 Arkadiusz Kosior , Krzysztof Sacha

Phase transitions induced by varying the strength of disorder in the large-q state Potts model in 3d are studied by analytical and numerical methods. By switching on the disorder the transition stays of first order, but different…

无序系统与神经网络 · 物理学 2007-05-23 M. T. Mercaldo , J-Ch. Anglès d'Auriac , F. Iglói

Phase separation in the Hubbard model is investigated with the dynamical cluster approximation. We find that it is present in the paramagnetic solution for values of filling smaller than one and at finite temperature when a positive…

强关联电子 · 物理学 2007-05-23 A. Macridin , M. Jarrell , Th. Maier

The transitions in disordered substances are discussed briefly: liquid--liquid phase transitions, liquid--glass transition and the transformations of one amorphous form to another amorphous form of the same substances. A description of…

无序系统与神经网络 · 物理学 2007-05-23 V. N. Ryzhov , E. E. Tareyeva

Abstract. The present work considers a change in the momentum under the transfer of a solution through the interface. It is shown that pressure related to the partial volumes of components arises in a solution under diffusion. As a result,…

统计力学 · 物理学 2021-02-16 Alex Guskov

The quantum phase transitions in the one-dimensional asymmetric Hubbard model are investigated with the bosonization approach. The conditions for the phase transition from density wave to phase separation, the correlation functions and…

强关联电子 · 物理学 2009-11-13 Z. G. Wang , Y. G. Chen , S. J. Gu

An existence result is proved for a nonlinear diffusion problem of phase-field type, consisting of a parabolic system of two partial differential equations, complemented by Neumann homogeneous boundary conditions and initial conditions.…

偏微分方程分析 · 数学 2012-02-24 Pierluigi Colli , Gianni Gilardi , Paolo Podio-Guidugli , Jürgen Sprekels

First-order phase transitions are commonly associated with a discontinuous behavior of some of the thermodynamic variables and the presence of a latent heat. In the present study it is shown that this is not necessarily the case. Using…

经典物理 · 物理学 2026-02-19 Matthias Hempel

The investigation of the Hamiltonian dynamical counterpart of phase transitions, combined with the Riemannian geometrization of Hamiltonian dynamics, has led to a preliminary formulation of a differential-topological theory of phase…

统计力学 · 物理学 2022-08-19 Matteo Gori , Roberto Franzosi , Giulio Pettini , Marco Pettini

We study a model for the depinning and driven steady state phases of a solid tuned across a polymorphic phase transition between ground states of triangular and square symmetry. These include pinned states which may have dominantly…

超导电性 · 物理学 2015-05-14 Ankush Sengupta , Surajit Sengupta , Gautam I. Menon

In the present paper a review and numerical comparison of a special class of multi-phase traffic theories based on microscopic, kinetic and macroscopic traffic models is given. Macroscopic traffic equations with multi-valued fundamental…

数值分析 · 数学 2015-03-20 Raul Borsche , Mark Kimathi , Axel Klar

The frequency dependence of dynamical conductivity of the quasi-one-dimensional structures with hydrogen bonds is studied on the basis of pseudospin-electron model. It takes into account the proton-electron interaction, external…

统计力学 · 物理学 2012-04-27 R. Ya. Stetsiv

We study the dynamics of shock-tracking probe particles in driven diffusive systems and also in equilibrium systems. In a driven system, they induce a diverging timescale that marks the crossover between a passive scalar regime at early…

统计力学 · 物理学 2007-05-23 Sakuntala Chatterjee , Mustansir Barma