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We investigate the finite-temperature phase diagram of polar molecules confined in a quasi-two-dimensional geometry by a harmonic potential along the polarization axis. We employ Quantum Monte Carlo simulations to explore the strongly…

量子气体 · 物理学 2026-05-19 Vinicius Zampronio , Matteo Ciardi , Fabio Cinti

Rydberg atoms and beams of ultracold polar molecules have become highly useful experimental tools in recent years. There is therefore a need for accessible calculations of interaction potentials between such particles and nearby surfaces…

量子物理 · 物理学 2012-03-05 Simen Å. Ellingsen , Stefan Yoshi Buhmann , Stefan Scheel

We present a model for molecular materials made up of polar and polarizable molecular units. A simple two state model is adopted for each molecular site and only classical intermolecular interactions are accounted for, neglecting any…

材料科学 · 物理学 2009-11-10 Francesca Terenziani , Anna Painelli

Recent molecular simulation and integral equation results alkali-halide ion pair potentials-of-mean-force in water are discussed. Dielectric model calculations are implemented to check that these models produce that characteristic structure…

chem-ph · 物理学 2008-02-03 Lawrence R. Pratt , Gerhard Hummer , Angel E. Garcia

In this letter, we analyze the dipole-dipole correlations obtained from the molecular dynamics simulations for strongly- and weakly-polar model liquids. As a result, we found that cross-correlations contribution to the systems total dipole…

软凝聚态物质 · 物理学 2022-07-07 Kajetan Koperwas , Marian Paluch

We present a new method for Monte Carlo or Molecular Dynamics numerical simulations of three dimensional polar fluids. The simulation cell is defined to be the surface of the northern hemisphere of a four-dimensional (hyper)sphere. The…

软凝聚态物质 · 物理学 2014-09-29 Jean-Michel Caillol , Martin Trulsson

The recently developed pragmatical model of asymmetric double-well potentials with a finite lifetime is applied to nonlinear dielectric data in polar undercooled liquids. The viscous effects from the finite lifetime provide a crossover from…

无序系统与神经网络 · 物理学 2017-05-23 U. Buchenau

When fluids of anisotropic molecules are placed in temperature gradients, the molecules may align themselves along the gradient: this is called thermo-orientation. We discuss the theory of this effect in a fluid of particles that interact…

统计力学 · 物理学 2019-04-02 Robert L. Jack , Peter Wirnsberger , Aleks Reinhardt

We consider the N-body problem in a layered geometry containing cold polar molecules with dipole moments that are polarized perpendicular to the layers. A harmonic approximation is used to simplify the hamiltonian and bound state properties…

量子气体 · 物理学 2012-04-02 J. R. Armstrong , N. T. Zinner , D. V. Fedorov , A. S. Jensen

Understanding the dynamic behavior of polar fluids is essential for modeling complex systems such as electrolytes and biological media. In this work, we develop and apply a Stochastic Density Functional Theory (SDFT) framework to describe…

软凝聚态物质 · 物理学 2025-07-23 Sleeba Varghese , Pierre Illien , Benjamin Rotenberg

Statistical theory of the dielectric susceptibility of polar liquid crystals is proposed. The molecules are not uniaxial but similar to cones. It is assumed that the permanent dipole moment of a molecule is parallel to the axis of the…

软凝聚态物质 · 物理学 2011-02-04 A. Kapanowski , T. Wietecha

An analytical description of polymer melts and their mixtures as liquids of interacting soft colloidal particles is obtained from liquid-state theory. The derived center-of-mass pair correlation functions with no adjustable parameters…

软凝聚态物质 · 物理学 2009-11-10 G. Yatsenko , E. J. Sambriski , M. A. Nemirovskaya , M. Guenza

We demonstrate that with two small modifications, the popular dielectric continuum model is capable of predicting, with high accuracy, ion solvation thermodynamics in numerous polar solvents, and ion solvation free energies in…

One important development in interaction potential models, or atomistic force fields, for molecular simulation is the inclusion of explicit polarisation, which represents the induction effects of charged or polar molecules on polarisable…

软凝聚态物质 · 物理学 2017-05-25 Agílio A. H. Pádua

We apply a phenomenological theory of polar liquids to calculate the interaction energy between two plane surfaces at nm-distances. We show that depending on the properties of the surface-liquid interfaces, the interacting surfaces induce…

软凝聚态物质 · 物理学 2013-04-24 P. O. Fedichev , L. I. Menshikov

We discuss laser dressed dipolar and Van der Waals interactions between atoms and polar molecules, so that a cold atomic gas with laser admixed Rydberg levels acts as a designed reservoir for both elastic and inelastic collisional…

原子物理 · 物理学 2012-05-15 Bo Zhao , Alexander Glätzle , Guido Pupillo , Peter Zoller

A number of simple pair interaction potentials of the carbon dioxide molecule are investigated and found to underestimate the magnitude of the second virial coefficient in the temperature interval 220 K to 448 K by up to 20%. Also the third…

材料科学 · 物理学 2012-12-21 Rasmus A. X. Persson

Quantum degenerate cold-atom gases provide a remarkable opportunity to study strongly interacting systems. Recent experimental progress in producing ultracold polar molecules with a net electric dipole moment opens up new possibilities to…

量子气体 · 物理学 2010-12-16 Roman M. Lutchyn , Enrico Rossi , S. Das Sarma

This paper reviews recent advances in the study of strongly interacting systems of dipolar molecules. Heteronuclear molecules feature large and tunable electric dipole moments, which give rise to long-range and anisotropic dipole-dipole…

量子气体 · 物理学 2016-07-14 Bryce Gadway , Bo Yan

The particles of electrorheological fluids can be modelled as dielectric spheres (DS) immersed in a continuum dielectric. When an external field is applied, polarization charges are induced on the surfaces of the spheres and can be…

软凝聚态物质 · 物理学 2013-12-13 D. Boda , M. Valiskó , I. Szalai
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