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The superfluid to normal fluid transition of dipolar bosons in two dimensions is studied throughout the whole density range using path integral Monte Carlo simulations and summarized in the phase diagram. While at low densities, we find…

原子物理 · 物理学 2015-05-18 A. V. Filinov , N. V. Prokof'ev , M. Bonitz

The shapes of cooperatively rearranging regions in glassy liquids change from being compact at low temperatures to fractal or ``stringy'' as the dynamical crossover temperature from activated to collisional transport is approached from…

软凝聚态物质 · 物理学 2015-06-25 Jacob D. Stevenson , Joerg Schmalian , Peter G. Wolynes

We have studied the electrostatic screening effect of NaCl solutions on the interactions between anionic lipid bilayers in the fluid lamellar phase using a Poisson-Boltzmann based mean-field approach with constant charge and constant…

软凝聚态物质 · 物理学 2016-12-28 Bing-Sui Lu , Santosh Gupta , Michal Belička , Rudolf Podgornik , Georg Pabst

We have performed Molecular Dynamics simulations of ectoine, hydroxyectoine and urea in explicit solvent. Special attention has been spent on the local surrounding structure of water molecules. Our results indicate that ectoine and…

软凝聚态物质 · 物理学 2011-10-06 Jens Smiatek , Rakesh Kumar Harishchandra , Oliver Rubner , Hans-Joachim Galla , Andreas Heuer

We study the distribution of colloidal particles confined in drying spherical droplets using both dynamic density functional theory (DDFT) and particle-based simulations. In particular, we focus on the advection-dominated regime typical of…

软凝聚态物质 · 物理学 2025-01-24 Mayukh Kundu , Kritika Kritika , Yashraj M. Wani , Arash Nikoubashman , Michael P. Howard

Halide perovskite quantum dots exhibit cooperative optical phenomena that are absent in conventional semiconductor nanocrystals, including exciton superradiance, superabsorption, and biexciton superradiance within individual dots. Here we…

光学 · 物理学 2026-02-25 Priya Nagpal , Patanjali Kambhampati

Kohn-Sham density functional theory (DFT) has become established as an indispensable tool for investigating aqueous systems of all kinds, including those important in chemistry, surface science, biology and the earth sciences. Nevertheless,…

材料科学 · 物理学 2016-05-04 M. J. Gillan , D. Alfè , A. Michaelides

Dissipative particle dynamics (DPD) is a relatively new technique which has proved successful in the simulation of complex fluids. We caution that for the equilibrium achieved by the DPD simulation of a simple fluid the temperature depends…

统计力学 · 物理学 2009-10-30 C. A. Marsh , J. M. Yeomans

We consider the Bose-Einstein transition of homogeneous weakly interacting spin-0 particles based on the normal-state Phi-derivable approximation. Self-consistent calculations of Green's function and the chemical potential with several…

量子气体 · 物理学 2012-10-08 K. Tsutsui , T. Kita

Finite size effects on the cooperative thermal denaturation of proteins are considered. A dimensionless measure of cooperativity, Omega, scales as N^zeta, where N is the number of amino acids. Surprisingly, we find that zeta is universal…

生物大分子 · 定量生物学 2009-11-10 Mai Suan Li , D. K. Klimov , D. Thirumalai

Clay-rich soils and sediments are key components of near-surface systems, influencing water retention, ion exchange, and structural stability. Their complex dielectric behavior under moist conditions arises from electrostatic interactions…

地球物理 · 物理学 2026-03-16 Felix Schmidt , Norman Wagner , Ines Mulder , Katja Emmerich , Thierry Bore , Jan Bumberger

A Monte Carlo simulation is performed in a cubic lattice of interacting identical Stoner-Woldfarth nanoparticles. The model system is a randomly-anisotropic Heisenberg spin system with a small anisotropy-to-exchange ratio D/J = 3.5. The dc…

统计力学 · 物理学 2009-03-10 Ha M. Nguyen , Pai-Yi Hsiao

Many ionic surfactants, such as sodium dodecyl sulphate (SDS) crystallize out of solution if the temperature falls below the crystallization boundary. The crystallization temperature is impacted by solution properties, and can be decreased…

Atomistic molecular dynamics simulations have reached a degree of maturity that makes it possible to investigate the lipid polymorphism of model bilayers over a wide range of temperatures. However if both the fluid $L_{\alpha}$ and tilted…

软凝聚态物质 · 物理学 2021-02-09 Vivien Walter , Céline Ruscher , Adrien Gola , Carlos M. Marques , Olivier Benzerara , Fabrice Thalmann

In this work we consider the semi-batch process of precipitation of calcium carbonate solids from a solution containing calcium ions by adjusting the pH of the solution. The change in pH is induced either by the addition of alkaline…

最优化与控制 · 数学 2025-08-14 Sandesh Athni Hiremath , Chinmay Hegde , Andreas Voigt

The electrical, magnetic, thermal and optical characteristics of Gallium (Ga) doped silicene are investigated using density functional theory (DFT). The effect of doping is studied by tuning dopant concentrations as well as examining varied…

材料科学 · 物理学 2022-04-05 Nzar Rauf Abdullah , Botan Jawdat Abdullah , Vidar Gudmundsson

In this paper we investigate the effect of Cd doping at ultra-low concentrations in SnO$_2$ both experimentally, by measuring the temperature dependence of the electric quadrupole hyperfine interactions with time-differential perturbed…

材料科学 · 物理学 2019-01-23 Germán N. Darriba , Emiliano L. Muñoz , Artur W. Carbonari , Mario Rentería

Boron subphthalocyanine chloride is an electron donor material used in small molecule organic photovoltaics with an unusually large molecular dipole moment. Using first-principles calculations, we investigate enhancing the electronic and…

材料科学 · 物理学 2017-05-08 Michael J. Waters , Daniel Hashemi , Guangsha Shi , Emmanouil Kioupakis , John Kieffer

The Optimized Perturbation Theory (OPT) method, at finite temperature and finite chemical potential, is applied to the field theory model for polyacetylene. The critical dopant concentration in trans-polyacetylene is evaluated and compared…

软凝聚态物质 · 物理学 2009-11-13 Heron Caldas , Jean-Loic Kneur , Marcus B. Pinto , Rudnei O. Ramos

Knowledge Distillation is a commonly used Deep Neural Network (DNN) compression method, which often maintains overall generalization performance. However, we show that even for balanced image classification datasets, such as CIFAR-100, Tiny…

机器学习 · 计算机科学 2025-04-03 Aida Mohammadshahi , Yani Ioannou