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Intersubband response in a superlattice subjected to a homogeneous electric field (biased superlattice with equipopulated levels) is studied within the tight-binding approximation, taking into account the interplay between homogeneous and…

其他凝聚态物理 · 物理学 2009-11-13 A. Hernández-Cabrera , P. Aceituno , F. T. Vasko

We present a statistical mechanics approximation scheme for the explicit treatment of spacer-mediated configurational correlations among the mesogenic units that form a dimer molecule. The approximation is applied to the description of the…

软凝聚态物质 · 物理学 2007-05-23 P. K. Karahaliou , A. G. Vanakaras , D. J. Photinos

We study a diffuse interface model for the flow of two viscous incompressible Newtonian fluids in a bounded domain. The fluids are assumed to be macroscopically immiscible, but a partial mixing in a small interfacial region is assumed in…

偏微分方程分析 · 数学 2011-04-01 Helmut Abels

In this paper a new approach to solving the 2D and 3D Ising models in external magnetic field $H\neq0$ is developed. The general formalism for the approach to the problem is presented on the example of the 2D Ising model in the external…

统计力学 · 物理学 2009-10-30 Martin S. Kochman'ski

The celebrated work of Onsager on hard particle systems, based on the truncated second order virial expansion, is valid at relatively low volume fractions for large aspect ratio particles. While it predicts the isotropic-nematic phase…

软凝聚态物质 · 物理学 2017-08-16 Eduardo S. Nascimento , Peter Palffy-Muhoray , Jamie M. Taylor , Epifanio G. Virga , Xiaoyu Zheng

We show existence and uniqueness of strong solutions to a Navier-Stokes/Cahn-Hilliard type system on a given two-dimensional evolving surface in the case of different densities and a singular (logarithmic) potential. The system describes a…

偏微分方程分析 · 数学 2024-08-15 Helmut Abels , Harald Garcke , Andrea Poiatti

We study anisotropies of helicity modulus, excitation spectrum, sound velocity and angle-resolved luminescence spectrum in a two-dimensional system of interacting excitons in a periodic potential. Analytical expressions for anisotropic…

介观与纳米尺度物理 · 物理学 2017-07-03 Yu. E. Lozovik , I. L. Kurbakov , Pavel A. Volkov

The hydrodynamic phase field model is applied to the problem of film spreading on a solid surface. The disjoining potential, responsible for modification of the fluid properties near a three-phase contact line, is computed from the…

流体动力学 · 物理学 2009-11-06 Len M. Pismen , Yves Pomeau

We consider the dynamics of a compressible fluid under the influence of electrostrictive ponderomotive forces in strong inhomogeneous nonstationary electric fields. It is shown that if the fronts of the voltage rise at a sharp, needle-like…

流体动力学 · 物理学 2014-04-02 M. N. Shneider , M. Pekker

We formulate macroscopic quantum electrodynamics for the most general linear, absorbing media. In particular, Onsager reciprocity is not assumed to hold. For media with a non-local response, the field quantisation is based on the…

量子物理 · 物理学 2015-05-30 Stefan Yoshi Buhmann , David T. Butcher , Stefan Scheel

Chiral active fluids can exhibit odd viscosity, a property that breaks the time-reversal and parity symmetries. Here, we examine the hydrodynamic flows of a rigid disk moving in a compressible 2D fluid layer with odd viscosity, supported by…

流体动力学 · 物理学 2026-01-21 Abdallah Daddi-Moussa-Ider , Andrej Vilfan , Yuto Hosaka

A non-perturbative theory is presented which allows to calculate the solvation free energy of polarizable ions near a water-vapor and water-oil interfaces. The theory predicts that larger halogen anions are adsorbed at the interface, while…

软凝聚态物质 · 物理学 2015-05-13 Yan Levin

In this paper, we introduce a new approach to solving the porous medium equation using a moving mesh finite element method that leverages the Onsager variational principle as an approximation tool. Both the continuous and discrete problems…

数值分析 · 数学 2024-04-01 Si Xiao , Xianmin Xu

We further study the interfaces arising in a situation of inhomogeneity. More precisely, we identify a characteristic length for the gradient percolation model, that enables us to tighten previous estimates established for it. This allows…

概率论 · 数学 2009-07-10 Pierre Nolin

We use Hodge theory and functional analysis to develop a clean approach to heat flows and Onsager's conjecture on Riemannian manifolds with boundary, where the weak solution lies in the trace-critical Besov space $B_{3,1}^{\frac{1}{3}}$. We…

偏微分方程分析 · 数学 2019-07-16 Khang Manh Huynh

A computer adapted theory for self-consistent calculations of the wavevector- and frequency-dependent dielectric constant for interaction site models of polar systems is proposed. A longitudinal component of the dielectric constant is…

化学物理 · 物理学 2015-06-26 Igor P. Omelyan

We develop and demonstrate two numerical methods for solving the class of open cavity problems which involve a curved, cylindrically symmetric conducting mirror facing a planar dielectric stack. Such dome-shaped cavities are useful due to…

光学 · 物理学 2009-11-10 David H. Foster , Jens U. Nockel

In this paper we suggest a method to observe remote interactions of spatially separated dipolar quantum fluids, and in particular of dipolar excitons in GaAs bilayer based devices. The method utilizes the static electric dipole moment of…

介观与纳米尺度物理 · 物理学 2015-05-19 Kobi Cohen , Ronen Rapaport , Paulo Santos

The structural organization of liquids near solid interfaces profoundly influences phenomena such as wettability, nanofluidic transport, and interfacial heat transfer. This study introduces the Interfacial Layering Oscillator Model (ILOM),…

流体动力学 · 物理学 2025-12-15 Chengzhen Sun , Yuntao Du , Tianyu Wu , Mehdi Neek-Amal

Dynamic optical sensors, as those based on the reflectivity of isotropic dielectrical interfaces, can be useful for measuring small changes in the refractive index of fluid media. Exact and approximated explicit formulas for their…

光学 · 物理学 2023-08-02 German Caro , Eduardo Acosta , Liliana Perez , Francisco Veiras