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Heavy-ion collisions involve strongly coupled dynamics of QCD in the entire history of time evolution. We review recent theoretical efforts to meet this challenge, focusing on the two approaches that the speaker has contributed to: 1)…

核理论 · 物理学 2015-06-12 Ho-Ung Yee

This paper presents an improved version of the previously proposed self-consistent drift-diffusion-reaction model correcting for non-physical behavior at longer time scales. To this end a novel boundary condition is employed that takes into…

材料科学 · 物理学 2020-06-19 Behrouz Raftari , Neil Budko , Kees Vuik

We study collective dynamics of interacting deformable self-propelled particles whose migration velocity increases when the local density of particles is increased. Numerical simulations in two dimensions reveal that traveling bands similar…

软凝聚态物质 · 物理学 2015-06-16 Sadato Yamanaka , Takao Ohta

We investigate the dynamical coupling between the motion and the deformation of a single self-propelled domain based on two different model systems in two dimensions. One is represented by the set of ordinary differential equations for the…

软凝聚态物质 · 物理学 2015-05-18 T. Hiraiwa , T. Ohkuma , T. Ohta , M. Y. Matsuo , M. Sano

Drift-diffusion analysis has been introduced in physics as a method to study turbulent flows. In the current study, it is proposed to use the method to identify underlying dynamical models of particulate matter smog, ozone and nitrogen…

大气与海洋物理 · 物理学 2019-07-03 T. Varapongpisan , L. Ingsrisawang , T. D. Frank

Coagulation of dust aggregates plays an important role in the formation of planets and is of key importance to the evolution of protoplanetary disks (PPDs). Characteristics of dust, such as the diversity of particle size, porosity, charge,…

地球与行星天体物理 · 物理学 2020-07-22 C. Xiang , L. S. Matthews , A. Carballido , T. W. Hyde

Debris disks are tenuous, dust-dominated disks commonly observed around stars over a wide range of ages. Those around main sequence stars are analogous to the Solar System's Kuiper Belt and Zodiacal light. The dust in debris disks is…

地球与行星天体物理 · 物理学 2018-10-17 A. Meredith Hughes , Gaspard Duchene , Brenda Matthews

We investigate the influence of disruptive collisions on chondrule rim growth, emphasizing the role of kinetic energy in determining the outcomes of these interactions. We establish a threshold of approximately 10 cm/s for the…

地球与行星天体物理 · 物理学 2025-01-09 Chuchu Xiang , Nina Merkert , Lorin S. Matthews , Augusto Carballido , Truell W. Hyde

Accurate models of mechanical system dynamics are often critical for model-based control and reinforcement learning. Fully data-driven dynamics models promise to ease the process of modeling and analysis, but require considerable amounts of…

机器学习 · 计算机科学 2021-04-19 A. René Geist , Sebastian Trimpe

We propose a new generative model for 3D garment deformations that enables us to learn, for the first time, a data-driven method for virtual try-on that effectively addresses garment-body collisions. In contrast to existing methods that…

计算机视觉与模式识别 · 计算机科学 2021-05-14 Igor Santesteban , Nils Thuerey , Miguel A. Otaduy , Dan Casas

Structural damage detection using non-contact sensing remains a challenging problem in structural health monitoring. This study presents a data-driven framework based on Dynamic Mode Decomposition (DMD) for extracting structural dynamics…

系统与控制 · 电气工程与系统科学 2026-05-05 R K B M Rizmi , Shabbir Ahmed

By taking into account the effects of leading particles, we discuss the pseudorapidity distributions of the charged particles produced in high energy heavy ion collisions in the context of evolution-dominated hydrodynamic model. The leading…

核理论 · 物理学 2014-01-07 Z. J. Jiang , H. L. Zhang , J. Wang , K. Ma

The formation and evolution of protoplanetary systems, the breeding grounds of planet formation, is a complex dynamical problem that involves many orders of magnitudes. To serve this purpose, we present a new hybrid algorithm that combines…

地球与行星天体物理 · 物理学 2011-06-01 Patrick Glaschke , Pau Amaro-Seoane , Rainer Spurzem

We propose a method for quantifying charge-driven instabilities in clusters, based on equilibrium simulations under confinement at constant external pressure. This approach makes no assumptions about the mode of decay and allows different…

原子与分子团簇 · 物理学 2015-10-28 Mark A. Miller , David A. Bonhommeau , Christian P. Moerland , Sarah J. Gray , Marie-Pierre Gaigeot

We demonstrate that the integration of the recently developed dynamic mode decomposition (DMD) with a multi-resolution analysis allows for a decomposition method capable of robustly separating complex systems into a hierarchy of…

动力系统 · 数学 2015-06-02 J. Nathan Kutz , Xing Fu , Steven L. Brunton

We use our variable Eddington tensor (VET) radiation hydrodynamics code to perform two-dimensional simulations to study the impact of radiation forces on atmospheres composed of dust and gas. Our setup closely follows that of Krumholz &…

星系天体物理 · 物理学 2015-06-19 Shane W. Davis , Yan-Fei Jiang , James M. Stone , Norman Murray

This project is focused on developing an experimental framework for characterizing non-associative plasticity flow rule coefficients through coupon-scale tests for the LS-DYNA MAT213 model. The main objective is to characterize these…

The problem of 3-dimensional, convex rigid-body collision over a plane is fully investigated; this includes bodies with sharp corners that is resolved without the need for nonsmooth convex analysis of tangent and normal cones. In…

数值分析 · 数学 2024-03-19 Khoa Tran , Melvin Leok

We consider the properties of a one dimensional fluid of brownian inertial hard-core particles, whose microscopic dynamics is partially damped by a heat-bath. Direct interactions among the particles are represented as binary, instantaneous…

统计力学 · 物理学 2007-05-23 Marini Bettolo Marconi Umberto , Tarazona Pedro

We recently introduced a fluid-dynamical model for simulating relativistic nuclear collisions in the presence of a first-order phase transition and made explorative studies of head-on lead-lead collisions. We give here a more detailed…

核理论 · 物理学 2013-05-15 Jan Steinheimer , Jorgen Randrup