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We construct a nearest-neighbour interacting particle system of exclusion type, which illustrates a transition from slow to fast diffusion. More precisely, the hydrodynamic limit of this microscopic system in the diffusive space-time…

概率论 · 数学 2023-01-18 Patricia Gonçalves , Gabriel Nahum , Marielle Simon

The origin of the dramatic changes in the behavior of liquids as they approach their vitreous state - increases of many orders of magnitude in transport properties and dynamic time scales - is a major unsolved problem in condensed matter.…

软凝聚态物质 · 物理学 2015-06-23 R. Casalini , D. Fragiadakis , C. M. Roland

The ability to efficiently and accurately calculate equilibrium time correlation functions of many-body condensed phase quantum systems is one of the outstanding problems in theoretical chemistry. The Nakajima-Zwanzig-Mori formalism coupled…

化学物理 · 物理学 2017-04-05 Andrés Montoya-Castillo , David R. Reichman

We use a series of cosmological N-body simulations and various analytic models to study the evolution of the matter power spectrum in real space in a \Lambda Cold Dark Matter universe. We compare the results of N-body simulations against…

This study overviews and extends a recently developed stochastic finite-temperature Kohn-Sham density functional theory to study warm dense matter using Langevin dynamics, specifically under periodic boundary conditions. The method's…

材料科学 · 物理学 2024-04-16 Rebecca Efrat Hadad , Argha Roy , Eran Rabani , Ronald Redmer , Roi Baer

We investigate dynamical heterogeneities in the collective relaxation of a concentrated microgel system, for which the packing fraction can be conveniently varied by changing the temperature. The packing fraction dependent mechanical…

软凝聚态物质 · 物理学 2011-05-31 David A. Sessoms , Irmgard Bischofberger , Luca Cipelletti , Véronique Trappe

We use the cosmo-OWLS suite of cosmological hydrodynamical simulations, which includes different galactic feedback models, to predict the cross-correlation signal between weak gravitational lensing and the thermal Sunyaev-Zeldovich (tSZ)…

Kinetic equilibration of the matter and baryon densities attained in central region of colliding Au+Au nuclei in the energy range of $\sqrt{s_{NN}}=$ 3.3--39 GeV are examined within the model of the three-fluid dynamics. It is found that…

核理论 · 物理学 2020-03-04 Yu. B. Ivanov , A. A. Soldatov

The study of event-by-event fluctuations of net-baryon number in a subspace of full phase space is a promising direction for deciphering the structure of strongly interacting matter created in head-on collisions of relativistic heavy…

核理论 · 物理学 2024-08-20 Peter Braun-Munzinger , Krzysztof Redlich , Anar Rustamov , Johanna Stachel

We critically examine how well the evolution of large-scale density perturbations is followed in cosmological $N$-body simulations. We first run a large volume simulation and perform a mode-by-mode analysis in three-dimensional Fourier…

Using a fundamental measure density functional theory we investigate both bulk and inhomogeneous systems of the binary non-additive hard sphere model. For sufficiently large (positive) non-additivity the mixture phase separates into two…

软凝聚态物质 · 物理学 2010-07-30 Paul Hopkins , Matthias Schmidt

To study the energy-dependent characteristics of thermodynamic and hydrodynamic parameters, based on the framework of a multi-source thermal model, we analyze the soft transverse momentum ($p_{T}$) spectra of the charged particles…

高能物理 - 唯象学 · 物理学 2023-12-19 Xu-Hong Zhang , Hao-Ning Wang , Fu-Hu Liu , Khusniddin K. Olimov

We utilize known exact analytic solutions of perfect fluid hydrodynamics to analytically calculate the polarization of baryons produced in heavy ion collisions. Assuming local thermodynamical equilibrium also for spin degrees of freedom,…

高能物理 - 唯象学 · 物理学 2020-05-22 Balint Boldizsar , Marton I. Nagy , Mate Csanad

The effect of a temperature dependent bulk viscosity to entropy density ratio~($\zeta/s$) along with a constant shear viscosity to entropy density ratio~($\eta/s$) on the space time evolution of the fluid produced in high energy heavy ion…

核理论 · 物理学 2012-01-23 Victor Roy , A. K. Chaudhuri

A recent mode coupling theory of higher-order correlation functions is tested on a simple hard-sphere fluid system at intermediate densities. Multi-point and multi-time correlation functions of the densities of conserved variables are…

统计力学 · 物理学 2009-11-07 Ramses van Zon , Jeremy Schofield

We study the non-equilibrium diffusion dynamics of supersonic lattice solitons in a classical chain of atoms with nearest-neighbor interactions coupled to a heat bath. As a specific example we choose an interaction with cubic anharmonicity.…

软凝聚态物质 · 物理学 2009-11-07 Edward Arevalo , Franz G. Mertens , Yuri Gaididei , A. R. Bishop

We explored strong coupling of dynamic breathing modes in one-dimensional (1D) skyrmion lattices periodically arranged in thin-film nanostrips. The coupled breathing modes exhibit characteristic concave-down dispersions that represent the…

介观与纳米尺度物理 · 物理学 2018-03-14 Junhoe Kim , Jaehak Yang , Young-Jun Cho , Bosung Kim , Sang-Koog Kim

We obtain the equations of fluctuating hydrodynamics for many-particle systems whose microscopic units have both translational and rotational motion. The orientational dynamics of each element are studied in terms of the rotational Brownian…

统计力学 · 物理学 2025-01-20 Akira Yoshimori , Shankar P. Das

The viscosity of glass-forming liquids increases by many orders of magnitude if their temperature is lowered by a mere factor of 2-3 [1,2]. Recent studies suggest that this widespread phenomenon is accompanied by spatially heterogeneous…

无序系统与神经网络 · 物理学 2015-05-28 Walter Kob , Sandalo Roldan-Vargas , Ludovic Berthier

Particle correlation measurements associated with a hard or semi-hard trigger in heavy-ion collisions may reflect Mach cone shockwaves excited in the bulk medium by partonic energy loss. This is of great interest because, when compared with…

核理论 · 物理学 2010-10-27 R. B. Neufeld , Thorsten Renk