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We investigate the low-temperature dynamics of a simple stochastic model, introduced recently in the context of the physics of glasses. The slowest characteristic time at equilibrium diverges exponentially at low temperature. On smaller…

统计力学 · 物理学 2009-10-30 C Godreche , J M Luck

We report results of dynamic light scattering measurements of the coherent intermediate scattering function (ISF) of glasses of hard spheres for several volume fractions and a range of scattering vectors around the primary maximum of the…

软凝聚态物质 · 物理学 2015-05-19 V. A. Martinez , G. Bryant , W. van Megen

We propose a novel computational strategy to study the glass transition of molecular fluids. Our approach combines the construction of simple yet realistic models with the development of Monte Carlo algorithms to accelerate equilibration…

统计力学 · 物理学 2026-03-31 Romain Simon , Jean-Louis Barrat , Ludovic Berthier

The formation and dissolution of a droplet is an important mechanism related to various nucleation phenomena. Here, we address the droplet formation-dissolution transition in a two-dimensional Lennard-Jones gas to demonstrate a consistent…

计算物理 · 物理学 2018-12-19 Franz Paul Spitzner , Johannes Zierenberg , Wolfhard Janke

We use finite size scaling to study Ising spin glasses in two spatial dimensions. The issue of universality is addressed by comparing discrete and continuous probability distributions for the quenched random couplings. The sophisticated…

无序系统与神经网络 · 物理学 2016-07-06 L. A. Fernandez , E. Marinari , V. Martin-Mayor , G. Parisi , J. J. Ruiz-Lorenzo

Linear response functions of aging systems are routinely interpreted using the scaling variable $t_{\rm obs}/t_{\rm w}^\mu$,where $t_{\rm w}$ is the time at which the field conjugated to the response is turned on or off, and where $t_{\rm…

统计力学 · 物理学 2011-01-10 Paolo Sibani , Gregory G. Kenning

Understanding large amounts of spatiotemporal data from particle-based simulations, such as molecular dynamics, often relies on the computation and analysis of aggregate measures. These, however, by virtue of aggregation, hide structural…

计算物理 · 物理学 2019-10-10 Juraj Pálenik , Jan Byška , Stefan Bruckner , Helwig Hauser

Apart from not having crystallized, supercooled liquids can be considered as being properly equilibrated and thus can be described by a few thermodynamic control variables. In contrast, glasses and other amorphous solids can be arbitrarily…

无序系统与神经网络 · 物理学 2017-10-10 Vassiliy Lubchenko , Peter G. Wolynes

Physical aging is one of the non-equilibrium phenomena where physical properties change over time due to structural relaxation. Aging in spin glass systems has been explained by a trap model on the temperature-independent energy landscape.…

统计力学 · 物理学 2025-09-08 Ayata Ueno , Tomoko Mizuguchi , Takashi Odagaki

Using molecular dynamics simulations, we investigate the effect of uniaxial elastostatic compression on the potential energy, structural relaxation, and mechanical properties of binary glasses. We consider the three-dimensional Kob-Andersen…

软凝聚态物质 · 物理学 2019-06-12 Nikolai V. Priezjev

We use the recently proposed generalised on-shell representation for scattering amplitudes and a consistency test to explore the space of tree-level consistent couplings in four-dimensional Minkowski spacetime. The extension of the…

高能物理 - 理论 · 物理学 2013-05-30 Paolo Benincasa , Eduardo Conde

Smart system applications (SSAs) built on top of cyber-physical and socio-technical systems are increasingly composed of components that can work both autonomously and by cooperating with each other. Cooperating robots, fleets of cars and…

机器学习 · 计算机科学 2021-05-03 Tomáš Bureš , Ilias Gerostathopoulos , Petr Hnětynka , Jan Pacovský

At low temperatures the dynamical degrees of freedom in amorphous solids are tunnelling two-level systems (TLSs). Concentrating on these degrees of freedom, and taking into account disorder and TLS-TLS interactions, we obtain a "TLS-glass",…

无序系统与神经网络 · 物理学 2020-07-27 Ofek Asban , Ariel Amir , Yoseph Imry , Moshe Schechter

Modern neural networks do not always produce well-calibrated predictions, even when trained with a proper scoring function such as cross-entropy. In classification settings, simple methods such as isotonic regression or temperature scaling…

机器学习 · 计算机科学 2021-03-26 Steven Reich , David Mueller , Nicholas Andrews

The standard model of glasses is an ensemble of two-level systems interacting with a thermal bath. The general origin of memory effects in this model is a quasi-stationary but non-equilibrium state of a single two-level system, which is…

无序系统与神经网络 · 物理学 2009-11-13 Gerardo Aquino , Armen Allahverdyan , Theo M. Nieuwenhuizen

At low temperatures ultrasoft particle systems develop interesting phases via the self-assembly of particle clusters. In this study we develop a general zero-temperature analysis fully characterizing the ground state of such models in two…

软凝聚态物质 · 物理学 2025-02-25 Matheus de Mello , Rogelio Díaz-Méndez , Alejandro Mendoza-Coto

Recent experiments and simulations have revealed glassy features in the cytoplasm, living tissues as well as dense assemblies of self propelled colloids. This leads to a fundamental question: how do these non-equilibrium (active) amorphous…

软凝聚态物质 · 物理学 2020-11-18 Rituparno Mandal , Peter Sollich

The SUE machine is used to extend by a factor of 1000 the time-scale of previous studies of the aging, out-of-equilibrium dynamics of the Edwards-Anderson model with binary couplings, on large lattices (L=60). The correlation function,…

无序系统与神经网络 · 物理学 2009-11-10 S. Jimenez , V. Martin-Mayor , G. Parisi , A. Tarancon

In this paper we present a short survey on the concept of effective temperature, on its onset as a glass former vitrifies, on the various definitions in literature and their limits of applicability. An exactly solvable model glass is…

无序系统与神经网络 · 物理学 2010-03-29 Luca Leuzzi

Over the last decade computer simulations have had an increasing role in shedding light on difficult statistical physical phenomena and in particular on the ubiquitous problem of the glass transition. Here in a wide variety of materials the…

统计力学 · 物理学 2015-06-04 Smarajit Karmakar , Itamar Procaccia