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相关论文: A New Method to Compute the Configurational Entrop…

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We explore the relationship between a machine-learned structural quantity (softness) and excess entropy in simulations of supercooled liquids. Excess entropy is known to scale well the dynamical properties of liquids, but this…

软凝聚态物质 · 物理学 2023-06-07 Ian R. Graham , Paulo E. Arratia , Robert A. Riggleman

We discuss the need for discretization to evaluate the configurational entropy in a general model. We also discuss the prescription using restricted partition function formalism to study the stationary limit of metastable states. We…

统计力学 · 物理学 2009-11-10 F. Semerianov , P. D. Gujrati

Trajectories provide dynamical information that is discarded in free energy calculations, for which we sought to design a scheme with the hope of saving cost for generating dynamical information. We first demonstrated that snapshots in a…

化学物理 · 物理学 2016-08-23 Kai Wang , Shiyang Long , Pu Tian

Evaluation of global thermodynamic properties, such as the entropy or the free energy, of complex systems featuring a high degree of frustration or disorder is often desirable. Nevertheless, they cannot be measured directly in standard…

统计力学 · 物理学 2020-07-08 Marek Semjan , Milan Žukovič

We translate the problem of calculating the entropy of a set of binary configurations/signals into a sequence of supervised classification tasks. Subsequently, one can use virtually any machine learning classification algorithm for…

统计力学 · 物理学 2019-10-25 Romuald A. Janik

The thermodynamic and physical properties of the Laves phase Fe2Mo have been investigated using the finite-temperature quantum mechanical calculations within the frame of the density functional theory (DFT). All relevant free energy…

材料科学 · 物理学 2022-07-04 Dmitry Vasilyev

We describe a simple method to determine, from ab initio calculations, the complete orientation-dependence of interfacial free energies in solid-state crystalline systems. We illustrate the method with an application to precipitates in the…

In this paper we establish a connection between the onset temperature of glassy dynamics with the change in the entropy for a wide range of model systems. We identify the crossing temperature of pair and excess entropies as the onset…

软凝聚态物质 · 物理学 2017-08-02 Atreyee Banerjee , Manoj Kumar Nandi , Srikanth Sastry , Sarika Maitra Bhattacharyya

Exact calculations are given for the Casimir energy for various fields in $R\times S^3$ geometry. The Green's function method naturally gives a result in a form convenient in the high-temperature limit, while the statistical mechanical…

高能物理 - 理论 · 物理学 2009-01-14 Iver Brevik , Kimball A. Milton , Sergei D. Odintsov

We present an algorithm which calculates groundstates of Ising spin glasses approximately. It works by randomly selecting clusters of spins which exhibit no frustrations. The spins which were not selected, contribute to the local fields of…

凝聚态物理 · 物理学 2015-06-25 A. K. Hartmann

We present a recursive procedure to calculate the parameters of the recently introduced multicanonical ensemble and explore the approach for spin glasses. Temperature dependence of the energy, the entropy and other physical quantities are…

高能物理 - 格点 · 物理学 2009-01-23 Bernd A. Berg , Tarik Celik

Despite the critical importance of the elastic properties of modern materials, there is not a singular model that can predict the modulus to an accuracy needed for industrial glass design. To address this problem, we propose an approach to…

材料科学 · 物理学 2019-02-15 Collin J. Wilkinson , Qiuju Zheng , Liping Huang , John. C. Mauro

The equilibrium state of a superfluid in a rotating cylindrical vessel is a vortex crystal -- an array of vortex lines which is stationary in the rotating frame. Experimental realisations of this behaviour typically show a sequence of…

流体动力学 · 物理学 2023-10-31 Andrew Cleary , Jacob Page

Classical particle systems characterized by continuous size polydispersity, such as colloidal materials, are not straightforwardly described using statistical mechanics, since fundamental issues may arise from particle distinguishability.…

统计力学 · 物理学 2017-01-16 Misaki Ozawa , Ludovic Berthier

The Free-Energy-Principle (FEP) is an influential and controversial theory which postulates a deep and powerful connection between the stochastic thermodynamics of self-organization and learning through variational inference. Specifically,…

人工智能 · 计算机科学 2021-10-05 Beren Millidge , Anil Seth , Christopher L Buckley

We report a model-independent measurement of the entropy, energy, and critical temperature of a degenerate, strongly interacting Fermi gas of atoms. The total energy is determined from the mean square cloud size in the strongly interacting…

其他凝聚态物理 · 物理学 2009-03-24 L. Luo , B. Clancy , J. Joseph , J. Kinast , J. E. Thomas

The goal of this book is to present new mathematical techniques for studying the behaviour of mean-field systems with disordered interactions. We mostly focus on certain problems of statistical inference in high dimension, and on spin…

概率论 · 数学 2023-11-29 Tomas Dominguez , Jean-Christophe Mourrat

We present a general analytic method to compute the number of metastable configurations as a function of the energy for a system of interacting Ising spins on the Bethe lattice. Our approach is based on the cavity method. We apply it to the…

统计力学 · 物理学 2009-11-07 A. Pagnani , G. Parisi , M. Ratieville

We show that the standard Fermi--Pasta--Ulam system, with a suitable choice for the interparticle potential, constitutes a model for glasses, and indeed an extremely simple and manageable one. Indeed, it allows one to describe the landscape…

统计力学 · 物理学 2015-07-22 Andrea Carati , Alberto Maiocchi , Luigi Galgani , Graziano Amati

Transitions between ``glassy'' local minima of a model free-energy functional for a dense hard-sphere system are studied numerically using a ``microcanonical'' Monte Carlo method that enables us to obtain the transition probability as a…

软凝聚态物质 · 物理学 2009-10-30 Chandan Dasgupta , Oriol T. Valls