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A simple fluid, described by point-like particles interacting via the Lennard-Jones potential, is considered under confinement in a slit geometry between two walls at distance Lz apart for densities inside the vapor-liquid coexistence…

软凝聚态物质 · 物理学 2009-11-13 Katarzyna Bucior , Leonid Yelash , Kurt Binder

A general theory for the melting of two dimensional solids explaining the universal and non-universal properties is an open problem up to date. Although the celebrated KTHNY theory have been able to predict the critical properties of the…

We analyze the behavior of supercooled fluids under shear both theoretically and numerically. Theoretically, we generalize the mode-coupling theory of supercooled fluids to systems under stationary shear flow. Our starting point is the set…

软凝聚态物质 · 物理学 2009-11-10 Kunimasa Miyazaki , David R. Reichman , Ryoichi Yamamoto

There are strong evidences that the melting in two dimensions depends crucially on the form and range of the interaction potentials between particles. We study with Monte Carlo simulations the phase diagram and the melting of a monolayer of…

统计力学 · 物理学 2013-01-09 Martial Mazars

Our study of the basic model for incompressible two-phase flows with phase transitions consistent with thermodynamics [10,11,12,16] is extended to the case of temperature-dependent surface tension. We prove well-posedness in an Lp-setting,…

偏微分方程分析 · 数学 2014-05-23 Jan Pruess , Senjo Shimizu , Gieri Simonett , Mathias Wilke

Using molecular dynamics simulations, we study a spherically-symmetric ``two-scale'' Jagla potential with both repulsive and attractive ramps. This potential displays a liquid-liquid phase transition with a positively sloped coexistence…

软凝聚态物质 · 物理学 2009-11-11 Limei Xu , Isaac Ehrenberg , Sergey V. Buldyrev , H. Eugene Stanley

We study a system formed by soft colloidal spheres attracting each other via a square-well potential, using extensive Monte Carlo simulations of various nature. The softness is implemented through a reduction of the infinite part of the…

软凝聚态物质 · 物理学 2011-02-03 Riccardo Fantoni , Alexandr Malijevsky , Andres Santos , Achille Giacometti

Using Monte-Carlo simulation and mean field calculations, we study the liquid-vapour phase diagram of a square well binary fluid mixture as a function of a parameter $\delta$ measuring the relative strength of interactions between particles…

统计力学 · 物理学 2009-10-31 N. B. Wilding , F. Schmid , P. Nieleba

We study the phase equilibrium between liquid water and ice Ih modeled by the TIP4P/Ice interatomic potential using enhanced sampling molecular dynamics simulations. Our approach is based on the calculation of ice Ih-liquid free energy…

统计力学 · 物理学 2020-06-24 Pablo M. Piaggi , Roberto Car

Remaining within the pure hydrodynamic approach, we formulate a self-consistent model for simulating the dynamic behavior of matter passing through metastable states in the two-phase liquid-vapor region of the phase diagram. The model is…

流体动力学 · 物理学 2013-04-30 Steffen Faik , Mikhail M. Basko , Anna Tauschwitz , Igor Iosilevskiy , Joachim A. Maruhn

Isotropic pair potentials that are bounded at the origin have been proposed from time to time as models of the effective interaction between macromolecules of interest in the chemical physics of soft matter. We present a thorough study of…

软凝聚态物质 · 物理学 2014-03-05 S. Prestipino , C. Speranza , G. Malescio , P. V. Giaquinta

Phase transformations such as freezing typically start with heterogeneous nucleation. Heterogeneous nucleation near a wetting transition, of a crystalline phase is studied. The wetting transition occurs at or near a vapour-liquid transition…

统计力学 · 物理学 2009-11-07 Richard P. Sear

A roughly constant temperature over a wide range of densities is maintained in molecular clouds through radiative heating and cooling. An isothermal equation of state is therefore frequently employed in molecular cloud simulations. However,…

天体物理学 · 物理学 2009-11-11 G. Pavlovski , M. D. Smith , M. -M. Mac Low

We assess experimentally and theoretically the character of the superfluid-supersolid quantum phase transition recently discovered in trapped dipolar quantum gases. We find that one-row supersolids can have already two types of phase…

量子气体 · 物理学 2024-06-11 G. Biagioni , N. Antolini , A. Alaña , M. Modugno , A. Fioretti , C. Gabbanini , L. Tanzi , G. Modugno

The description of surface-diffusion controlled dynamics via the phase-field method is less trivial than it appears at first sight. A seemingly straightforward approach from the literature is shown to fail to produce the correct…

计算物理 · 物理学 2017-03-13 Clemens Mueller-Gugenberger , Robert Spatschek , Klaus Kassner

We analyse the dynamics of different routes to collapse of a constrained polyelectrolyte gel in contact with an ionic bath. The evolution of the gel is described by a model that incorporates non-linear elasticity, Stefan-Maxwell diffusion…

软凝聚态物质 · 物理学 2025-01-22 Giulia L. Celora , Matthew G. Hennessy , Andreas Münch , Barbara Wagner , Sarah L. Waters

We study the exciton gas-liquid transition in GaAs/AlGaAs coupled quantum wells. Below a critical temperature, Tc=4.8K, and above a threshold laser power density the system undergoes a phase transition into a liquid state. We determine the…

介观与纳米尺度物理 · 物理学 2018-02-14 Subhradeep Misra , Michael Stern , Arjun Joshua , Vladimir Umansky , Israel Bar-Joseph

Within the coexistence region between liquid and vapor the equilibrium pressure of a simulated fluid exhibits characteristic jumps and plateaus when plotted as a function of density at constant temperature. These features exclusively…

统计力学 · 物理学 2015-09-09 S. Prestipino , C. Caccamo , D. Costa , G. Malescio , G. Munaò

We investigate a one-dimensional model that shows several properties of water. The model combines the long-range attraction of the van der Waals model with the nearest-neighbor interaction potential by Ben-Naim, which is a step potential…

统计力学 · 物理学 2012-09-28 Lotta Heckmann , Barbara Drossel

When liquids are cooled sufficiently rapidly below their melting temperature, they may bypass crystalization and, instead, enter a long-lived metastable supercooled state that has long been the focus of intense research. Although they…

统计力学 · 物理学 2023-12-05 Zohar Nussinov