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Vapor-liquid menisci of the truncated and shifted Lennard-Jones fluid between parallel planar walls are investigated by molecular dynamics simulation. Thereby, the characteristic energy of the unlike dispersive interaction between fluid…

介观与纳米尺度物理 · 物理学 2015-03-13 Martin Horsch , Martina Heitzig , Calin Dan , Jens Harting , Hans Hasse , Jadran Vrabec

We consider the interatomic van der Waals interaction energy between two neutral ground-state atoms moving in the vacuum space with the same uniform acceleration. We assume the acceleration orthogonal to their separation, so that their…

量子物理 · 物理学 2013-07-25 Antonio Noto , Roberto Passante

We consider a dimer formed by two particles with an attractive contact interaction in one dimension, colliding with a hard wall. We compute the scattering phase shifts and the reflection coefficients for various collision energies and…

量子气体 · 物理学 2026-03-17 Xican Zhang , Shina Tan

We investigate the interaction of metastable 2S hydrogen atoms with a perfectly conducting wall, including parity-breaking S-P mixing terms (with full account of retardation). The neighboring 2P_1/2 and 2P_3/2 levels are found to have a…

量子物理 · 物理学 2015-01-23 U. D. Jentschura

Competing short- and long-range interactions represent distinguished ingredients for the formation of complex quantum many-body phases. Their study is hard to realize with conventional quantum simulators. In this regard, Rydberg atoms…

量子气体 · 物理学 2024-02-06 Zeki Zeybek , Rick Mukherjee , Peter Schmelcher

The van der Waals and Casimir interactions of a hydrogen atom (molecule) with a single-walled and a multiwalled carbon nanotubes are compared. It is shown that the macroscopic concept of graphite dielectric permittivity is already…

统计力学 · 物理学 2009-11-13 G. L. Klimchitskaya , E. V. Blagov , V. M. Mostepanenko

On the basis of a general formula obtained earlier via fourth-order erturbation theory within the framework of macroscopic quantum electrodynamics, the van der Waals potential between two neutral, unpolarized, ground-state atoms in the…

量子物理 · 物理学 2008-08-14 Hassan Safari , Dirk-Gunnar Welsch , Ho Trung Dung , Stefan Yoshi Buhmann

We study the potential and the charge distribution across the interface of a plasma and a dielectric wall. For this purpose, the charge bound to the wall is modelled as a quasi-stationary electron surface layer which satisfies Poisson's…

等离子体物理 · 物理学 2015-05-30 Rafael L. Heinisch , Franz X. Bronold , Holger Fehske

We determine the energy-level shift experienced by a neutral atom due the quantum electromagnetic interaction with a layered dielectric body. We use the technique of normal-mode expansion to quantize the electromagnetic field in the…

量子物理 · 物理学 2011-03-15 Claudia Eberlein , Robert Zietal

Within the framework of macroscopic quantum electrodynamics, the resonant van der Waals potential experienced by an excited two-level atom near a planar magneto-electric two-layer system consisting of a slab of left-handed material and a…

量子物理 · 物理学 2009-02-17 Agnes Sambale , Stefan Yoshi Buhmann , Dirk-Gunnar Welsch , Ho Trung Dung

We investigate the van der Waals interaction between neutrons using the theory of Casimir and Polder, wherein the potential for asymptotically large separations falls off as the inverse seventh power, and compare it to the similar…

核理论 · 物理学 2016-04-01 James F. Babb , Mahir S. Hussein

We show that the resonant dipole-dipole interaction can give rise to bound states between two and three Rydberg atoms with non-overlapping electron clouds. The dimer and trimer states arise from avoided level crossings between states…

原子物理 · 物理学 2015-06-19 Martin Kiffner , Mingxia Huo , Wenhui Li , Dieter Jaksch

We study the scaling behaviour of dispersion potentials and forces under very general conditions. We prove that a rescaling of an arbitrary geometric arrangement by a factor a changes the atom-atom and atom-body potentials in the…

量子物理 · 物理学 2010-03-22 Stefan Yoshi Buhmann , Stefan Scheel , James Babington

In earlier papers we have applied multiple scattering techniques to calculate Casimir forces due to scalar fields between different bodies described by delta function potentials. When the coupling to the potentials became weak, closed-form…

高能物理 - 理论 · 物理学 2008-11-26 Kimball A. Milton , Prachi Parashar , Jef Wagner

The van der Waals force established between two surfaces plays a central role in many phenomena, such as adhesion or friction. However, the dependence of this forces on the distance of separation between plates is very complex. Two widely…

介观与纳米尺度物理 · 物理学 2022-05-12 Juan Luengo-Márquez , Luis G. MacDowell

The van der Waals interaction between two polarizable atoms is considered. In three dimensions the standard form with an attractive $1/|R|^6$ potential is obtained from second-order quantum perturbation theory. When the electron motion is…

量子物理 · 物理学 2015-01-22 A. C. Ipsen , K. Splittorff

Within the framework of quantization of the macroscopic electromagnetic field, equations of motion and an effective Hamiltonian for treating both the resonant dipole-dipole interaction between two-level atoms and the resonant atom-field…

量子物理 · 物理学 2016-08-16 Ho Trung Dung , Ludwig Knöll , Dirk-Gunnar Welsch

The dispersion interaction between two point-like particles confined in a dielectric slab between two plates of another dielectric medium is studied within a continuum (Lifshitz) theory. The retarded (Casimir-Polder) interaction at large…

化学物理 · 物理学 2007-05-23 Michal Marcovitch , Haim Diamant

A local approximation for dynamic polarizability leads to a nonlocal functional for the long-range dispersion interaction energy via an imaginary-frequency integral. We analyze several local polarizability approximations and argue that the…

化学物理 · 物理学 2015-03-17 Oleg A. Vydrov , Troy Van Voorhis

We show that the dipole-dipole interaction between two Rydberg atoms can give rise to long range molecules. The binding potential arises from two states that converge to different separated atom asymptotes. These states interact weakly at…

原子物理 · 物理学 2015-06-05 Martin Kiffner , Hyunwook Park , Wenhui Li , Tom F. Gallagher