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We propose a novel cluster-based reduced-order modelling (CROM) strategy of unsteady flows. CROM combines the cluster analysis pioneered in Gunzburger's group (Burkardt et al. 2006) and and transition matrix models introduced in fluid…

Traditional equivalent circuit models (ECMs) have difficulties in estimating battery internal states due to the lack of relevant physics, such as the lithium diffusion in active particles. Here we configure a circuit network to describe the…

材料科学 · 物理学 2023-04-04 Mingzhao Zhuo , Niall Kirkaldy , Tom Maull , Timothy Engstrom , Gregory Offer , Monica Marinescu

We report a computational strategy to obtain the charges of individual dielectric particles from experimental observation of their interactions as a function of time. This strategy uses evolutionary optimization to minimize the difference…

软凝聚态物质 · 物理学 2018-08-01 Xikai Jiang , Jiyuan Li , Victor Lee , Heinrich M. Jaeger , Olle G. Heinonen , Juan J. de Pablo

Material properties controlled by evolving defect structures, such as mechanical response, often involve processes spanning many length and time scales which cannot be modeled using a single approach. We present a variety of new results…

材料科学 · 物理学 2015-06-19 Joel Berry , Nikolas Provatas , Jörg Rottler , Chad W. Sinclair

Phase retrieval (PR) is an important component in modern computational imaging systems. Many algorithms have been developed over the past half-century. Recent advances in deep learning have introduced new possibilities for a robust and fast…

机器学习 · 计算机科学 2021-11-10 Chang-Jen Wang , Chao-Kai Wen , Shang-Ho , Tsai , Shi Jin , Geoffrey Ye Li

A recently developed technique to determine the order and strength of phase transitions by extracting the density of partition function zeroes (a continuous function) from finite-size systems (a discrete data set) is generalized to systems…

高能物理 - 格点 · 物理学 2009-11-07 Wolfhard Janke , Des Johnston , Ralph Kenna

Micro emulsions (MEs) offer an exceptionally broad spectrum of applications covering sensing, electrosynthesis, supercapacitors and redox-flow batteries. Herein, we develop the theory for a sophisticated electrochemical characterizion of…

化学物理 · 物理学 2021-04-27 Tim Tichter , Rohan Borah , Thomas Nann

We analyze a system of polar molecules in a one-dimensional optical lattice. By controlling the internal structure of the polar molecules with static electric and microwave fields, we demonstrate the appearance of a quantum phase transition…

量子气体 · 物理学 2015-09-02 Markus Klinsmann , David Peter , Hans Peter Büchler

We study the Electroweak phase transition with the Standard Model effective field theory at finite temperature and finite density. Utilizing the dimensional reduction approach, we construct the tree dimensional thermal effective field…

高能物理 - 唯象学 · 物理学 2024-07-03 Renhui Qin , Ligong Bian

The steady states of the two-species (positive and negative particles) asymmetric exclusion model of Evans, Foster, Godreche and Mukamel are studied using Monte Carlo simulations. We show that mean-field theory does not give the correct…

统计力学 · 物理学 2009-10-30 Peter F. Arndt , Thomas Heinzel , Vladimir Rittenberg

We introduce the eigen microstate entropy ($S_{\text{EM}}$), a novel metric of complexity derived from the probabilities of statistically independent eigen microstates. After establishing its scaling behavior in equilibrium systems and…

Discovery of electrocatalytic materials for high-performance energy conversion and storage applications relies on the adequate characterization of their intrinsic activity, which is currently hindered by the dearth of a protocol for…

物理教育 · 物理学 2021-03-04 Dulce M. Morales , Marcel Risch

The characterization of collective behavior and nonequilibrium phase transitions in quantum systems is typically rooted in the analysis of suitable system observables, so-called order parameters. These observables might not be known a…

量子物理 · 物理学 2026-02-20 Erik Fitzner , Francesco Carnazza , Federico Carollo , Igor Lesanovsky

We present a new method of analysis of measure-preserving dynamical systems, based on frequency analysis and ergodic theory, which extends our earlier work [1]. Our method employs the novel concept of harmonic time average [2], and is…

混沌动力学 · 物理学 2014-07-29 Zoran Levnajić , Igor Mezić

The generic problem of extracting information on intrinsic particle properties from the whole class of interacting magnetic fine particle systems is a long standing and difficult inverse problem. As an example, the Switching Field…

材料科学 · 物理学 2016-11-29 Sergiu Ruta , Ondrej Hovorka , Pin-Wei Huang , Kangkang Wang , Ganping Ju , Roy Chantrell

We show that when a self-avoiding polymer chain is pulled off a sticky surface by force applied to the end segment, it undergoes a first-order thermodynamic phase transition albeit without phase coexistence. This unusual feature is…

软凝聚态物质 · 物理学 2009-09-15 A. Milchev , V. G. Rostiashvili , S. Bhattacharya , T. A. Vilgis

We present a 2.5-dimensional charge-conservative electromagnetic particle-in-cell (EM-PIC) algorithm optimized for the analysis of vacuum electronic devices (VED) with cylindrical symmetry (axisymmetry). We explore the axisymmetry present…

等离子体物理 · 物理学 2017-06-28 Dong-Yeop Na , Yuri A. Omelchenko , Haksu Moon , Ben-Hur V. Borges , Fernando L. Teixeira

Herein, we propose a comprehensive benchmark of electronic-structure methods to describe dark transitions, that is, transitions to excited electronic states characterized by a near-zero oscillator strength. This type of electronic state is…

化学物理 · 物理学 2025-08-07 Jasmine Bone , Javier Carmona-García , Daniel Hollas , Basile F. E. Curchod

Eigenvector continuation (EC) has recently attracted a lot attention in nuclear structure and reactions as a variational resummation tool for many-body expansions. While previous applications focused on ground-state energies, excited states…

核理论 · 物理学 2022-06-09 Margarida Companys Franzke , Alexander Tichai , Kai Hebeler , Achim Schwenk

Electroosmotic flow (EOF) is a ubiquitous phenomenon at the solid-liquid interface when an external electric field is applied. Despite its prevalence, the characteristics and mechanisms of EOF driven by an alternating current (AC) electric…

流体动力学 · 物理学 2024-05-14 Yu Han , Zhongyan Hu , Kaige Wang , Wei Zhao