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The Semiempirical Pseudopotential Method (SEPM) has emerged as a valuable tool for accurately determining band structures, especially in the realm of low-dimensional materials. SEPM operates by utilizing atomic pseudopotentials, which are…

材料科学 · 物理学 2024-06-25 Raj Kumar Paudel , Chung-Yuan Ren , Yia-Chung Chang

Isomorphs are curves in the thermodynamic phase diagram of invariant excess entropy, structure, and dynamics, while pseudoisomorphs are curves of invariant structure and dynamics, but not of the excess entropy. The latter curves have been…

软凝聚态物质 · 物理学 2024-10-30 Zahraa Sheydaafar , Jeppe C. Dyre , Thomas B. Schrøder

Direct access to transition state energies at low computational cost unlocks the possibility of accelerating catalyst discovery. We show that the top performing graph neural network potential trained on the OC20 dataset, a related but…

We study a one-dimensional quasiperiodic tight-binding model with simultaneous off-diagonal (hopping) and diagonal (onsite) modulations. Using the inverse participation ratio and the wave-packet centroid, we construct…

无序系统与神经网络 · 物理学 2026-01-27 Ao Zhou , Feng Lu , Shujie Cheng , Gao Xianlong

The random-phase approximation (RPA) as an approach for computing the electronic correlation energy is reviewed. After a brief account of its basic concept and historical development, the paper is devoted to the theoretical formulations of…

材料科学 · 物理学 2017-07-26 Xinguo Ren , Patrick Rinke , Christian Joas , Matthias Scheffler

In this paper we investigate the relationship between the mixing times of the Glauber dynamics of a statistical mechanical system with its thermodynamic equilibrium structure. For this we consider the mean-field Blume-Capel model, one of…

概率论 · 数学 2015-05-27 Yevgeniy Kovchegov , Peter T. Otto , Mathew Titus

There is a vast amount of literature concerning the appropriateness of various perturbation parameters for the standard quasi-steady state approximation in the Michaelis-Menten reaction mechanism, and also concerning the relevance of these…

动力系统 · 数学 2024-02-01 Justin Eilertsen , Santiago Schnell , Sebastian Walcher

We consider problems of dynamic viscoelasticity taking into account the coupling of elastic and thermal fields. Efficient approximate models are developed and computational results on thermomechanical behaviour of shape-memory-alloy…

数值分析 · 数学 2025-10-20 R. V. N. Melnik , A. J. Roberts

Transition path sampling is a rare-event method that estimates state-to-state timecorrelation functions in many-body systems from samples of short trajectories. In this framework, it is proposed to bias the importance function using the…

化学物理 · 物理学 2015-03-13 Manuel Athènes , Mihai-Cosmin Marinica , Thomas Jourdan

Bridging functionalities in periodic mesoporous organosilicas (PMOs) enable new functionalities for a wide range of applications. Bridge cleavage is frequently observed during anneals required to form porous structures, yet the mechanism of…

材料科学 · 物理学 2024-02-07 Zeming Sun , Aine Connolly , Michael O. Thompson

Spontaneous structural rearrangements play a central role in the organization and function of complex biomolecular systems. In principle, physics-based computer simulations like Molecular Dynamics (MD) enable us to investigate these…

量子物理 · 物理学 2026-03-19 Danial Ghamari , Philipp Hauke , Roberto Covino , Pietro Faccioli

We develop a mean-field theory for the totally asymmetric simple exclusion process (TASEP) with open boundaries, in order to investigate the so-called dynamical transition. The latter phenomenon appears as a singularity in the relaxation…

统计力学 · 物理学 2020-08-11 Davide Botto , Alessandro Pelizzola , Marco Pretti , Marco Zamparo

This work is devoted to the investigation of the most probable transition time between metastable states for stochastic dynamical systems. Such a system is modeled by a stochastic differential equation with non-vanishing Brownian noise, and…

数学物理 · 物理学 2021-08-11 Yuanfei Huang , Ying Chao , Wei Wei , Jinqiao Duan

In equilibrium, the physical properties of matter are set by the interactions between the constituents. In contrast, the energy input of the individual components controls the behavior of synthetic or living active matter. Great progress…

软凝聚态物质 · 物理学 2025-08-29 Q. Martinet , Y. Li , A. Aubret , E. Hannezo , J. Palacci

This paper presents a state representation framework for Markov decision processes (MDPs) that can be learned solely from state trajectories, requiring neither reward signals nor the actions executed by the agent. We propose learning the…

机器学习 · 计算机科学 2026-03-25 Lorenzo Steccanella , Joshua B. Evans , Özgür Şimşek , Anders Jonsson

We consider the asymmetric simple exclusion processes (ASEP) on a ring constrained to produce an atypically large flux, or an extreme activity. Using quantum free fermion techniques we find the time-dependent conditional transition…

统计力学 · 物理学 2015-05-20 V. Popkov , G. M. Schütz

We consider the application of Kramers theory to the microscopic calculation of rates of conformational transitions of macromolecules. The main difficulty in such an approach is to locate the transition state in a huge configuration space.…

生物大分子 · 定量生物学 2008-09-02 Marcello Sega , Pietro Faccioli , Francesco Pederiva , Henri Orland

Despite significant progress in static protein structure collection and prediction, the dynamic behavior of proteins, one of their most vital characteristics, has been largely overlooked in prior research. This oversight can be attributed…

Quantum Gibbs state sampling algorithms generally suffer from either scaling exponentially with system size or requiring specific knowledge of spectral properties \textit{a priori}. Also, these algorithms require a large overhead of bath or…

量子物理 · 物理学 2020-09-02 Jeffrey Cohn , Khadijeh Sona Najafi , Forest Yang , Barbara Jones , James K. Freericks

Adiabatic evolutions find widespread utility in applications to quantum state engineering, geometric quantum computation, and quantum simulation. Although offering robustness to experimental imperfections, adiabatic processes are…