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An inhomogeneous Kaluza-Klein compactification to four dimensions, followed by a conformal transformation, results in a system with position dependent mass (PDM). This origin of a PDM is quite different from the condensed matter one. A…

量子物理 · 物理学 2015-10-29 J. R. Morris

Using a version of density-functional theory which combines Onsager approximation and fundamental-measure theory for spatially nonuniform phases, we have studied the phase diagram of freely rotating hard rectangles and hard discorectangles.…

软凝聚态物质 · 物理学 2009-11-10 Yuri Martinez-Raton , Enrique Velasco , Luis Mederos

We study the problem of homogenization for inertial particles moving in a time dependent random velocity field and subject to molecular diffusion. We show that, under appropriate assumptions on the velocity field, the large--scale,…

数学物理 · 物理学 2007-05-23 G. A. Pavliotis , A. M. Stuart , K. C. Zygalakis

We present a new and completely general technique for calculating the fine-grained phase-space structure of dark matter throughout the Galactic halo. Our goal is to understand this structure on the scales relevant for direct and indirect…

天体物理学 · 物理学 2009-11-13 Mark Vogelsberger , Simon D. M. White , Amina Helmi , Volker Springel

We obtain a unified theory of discrete minimal surfaces based on discrete holomorphic quadratic differentials via a Weierstrass representation. Our discrete holomorphic quadratic differential are invariant under M\"{o}bius transformations.…

微分几何 · 数学 2016-10-05 Wai Yeung Lam

In the homogenization of composite metamaterials the role played by the relative positions of the wires and resonators is not well understood, though essential. We present a general argument which shows that the homogenization of such…

介观与纳米尺度物理 · 物理学 2007-05-23 A. Cabuz , D. Felbacq

Binary mixtures of hard-spheres with different diameters and square-well attraction between different particles are studied by theory and Monte Carlo simulations. In our mesoscopic theory, local fluctuations of the volume fraction of the…

软凝聚态物质 · 物理学 2021-10-04 O. Patsahan , A. Meyra , A. Ciach

We investigate the dephasing suffered by a nonrelativistic quantum particle within a conformally fluctuating spacetime geometry. Starting from a minimally coupled massive Klein-Gordon field, the low velocity limit yields an effective…

广义相对论与量子宇宙学 · 物理学 2009-07-24 Paolo M. Bonifacio , Charles H. -T. Wang , J. Tito Mendonca , Robert Bingham

We present a quantum theory for the dynamic structure factors in non-equilibrium, correlated, two-component systems such as plasmas or warm dense matter. Using this general framework, we derive expressions for effective local field…

等离子体物理 · 物理学 2018-01-31 J. Vorberger , D. A. Chapman

We use geometric methods to study two natural two-component generalizations of the periodic Camassa-Holm and Degasperis-Procesi equations. We show that these generalizations can be regarded as geodesic equations on the semidirect product of…

偏微分方程分析 · 数学 2011-05-05 Joachim Escher , Martin Kohlmann , Jonatan Lenells

As amorphous materials get jammed, both geometric and dynamic heterogeneity are observed. We investigate the correlation between the local geometric heterogeneity and local rearrangements in a slowly compressed bidisperse…

软凝聚态物质 · 物理学 2024-03-21 Xin Du , Eric R. Weeks

We evaluate reflected entropy in certain anisotropic boundary theories dual to nonrelativistic geometries using holography. It is proposed that this quantity is proportional to the minimal area of the entanglement wedge cross section. Using…

高能物理 - 理论 · 物理学 2025-01-23 Mohammad Javad Vasli , M. Reza Mohammadi Mozaffar , Komeil Babaei Velni , Mohammad Sahraei

We aim at understanding transport in porous materials including regions with both high and low diffusivities. For such scenarios, the transport becomes structured (here: {\em micro-macro}). The geometry we have in mind includes regions of…

数学物理 · 物理学 2010-03-23 T. van Noorden , A. Muntean

In our previous work [J. Chem. Phys. \textbf{136}, 024502 (2012)], we reported a demixing phase transition of a two-dimensional, binary Heisenberg fluid mixture driven by the ferromagnetic interactions of the magnetic species. Here, we…

软凝聚态物质 · 物理学 2015-06-16 Ken Lichtner , Sabine H. L. Klapp

Structure of monolayers built during adsorption process is strongly related to the properties of adsorbed particles. The most important factor is their shape. For example, adsorption of elongated molecules on patterned surfaces may produce…

材料科学 · 物理学 2013-06-28 Jakub Barbasz , Michał Cieśla

We present a first-principles derivation of spatial atomic-sublevel decoherence near dielectric and metallic surfaces. The theory is based on the electromagnetic-field quantization in absorbing dielectric media. We derive an expression for…

量子物理 · 物理学 2007-05-23 R. Fermani , S. Scheel , P. L. Knight

We consider anisotropic colloidal particles immersed in a solution of long, flexible, and nonadsorbing polymers. For the dumbbell shapes of recently synthesized particles consisting of two intersecting spheres and for lens-shaped particles…

统计力学 · 物理学 2009-11-11 E. Eisenriegler , A. Bringer

We study the counterion distribution around a spherical macroion and its osmotic pressure in the framework of the recently developed Debye-H"uckel-Hole-Cavity (DHHC) theory. This is a local density functional approach which incorporates…

软凝聚态物质 · 物理学 2009-11-10 Marcia C. Barbosa , Markus Deserno , Christian Holm , Rene Messina

We establish sharp pointwise kernel estimates and dispersive properties for the wave equation on noncompact symmetric spaces of general rank. This is achieved by combining the stationary phase method and the Hadamard parametrix, and in…

偏微分方程分析 · 数学 2024-10-24 Jean-Philippe Anker , Hong-Wei Zhang

Dispersion properties of electromagnetic crystals formed by small uniaxial resonant scatterers (magnetic or electric) are studied using the local field approach. The goal of the study is to determine the conditions under which the…

材料科学 · 物理学 2009-11-11 Pavel A. Belov , Constantin R. Simovski