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Universal aspects of the thermodynamic Casimir effect in wetting films of 3He-4He mixtures near their bulk tricritical point are studied within suitable models serving as representatives of the corresponding universality class. The…

统计力学 · 物理学 2009-11-11 A. Maciolek , S. Dietrich

The critical Casimir force (CCF) arises from confining fluctuations in a critical fluid and thus it is a fluctuating quantity itself. While the mean CCF is universal, its (static) variance has previously been found to depend on the…

统计力学 · 物理学 2021-06-21 Markus Gross , Andrea Gambassi , S. Dietrich

We discuss several approaches to determine the Casimir force in inertial frames of reference in different dimensions. On an example of a simple model involving mirrors in Rindler spacetime we show that Casimir's and Lifschitz's methods are…

We develop a spectral representation formalism to calculate the Casimir force in the non-retarded limit, between a spherical particle and a substrate, both with arbitrary local dielectric properties. This spectral formalism allows one to do…

量子物理 · 物理学 2007-05-23 Cecilia Noguez , C. E. Roman-Velazquez

The temperature dependence of the Casimir force between a real metallic plate and a metallic sphere is analyzed on the basis of optical data concerning the dispersion relation of metals such as gold and copper. Realistic permittivities…

量子物理 · 物理学 2009-01-14 I. Brevik , J. B. Aarseth , J. S. Høye , K. A. Milton

The Casimir-Lifshitz interaction, a long-range force that arises between solids and molecules due to quantum fluctuations in electromagnetic fields, has been widely studied in solid-state physics. The degree of polarization in this…

材料科学 · 物理学 2023-08-01 M. Boström , M. Rizwan Khan , H. R. Gopidi , I. Brevik , Y. Li , C. Persson , O. I. Malyi

We study the radiative heat transfer and the Casimir-Lifshitz force occurring between two bodies in a system out of thermal equilibrium. We consider bodies of arbitrary shape and dielectric properties, held at two different temperatures,…

量子物理 · 物理学 2015-05-30 Riccardo Messina , Mauro Antezza

Arguments are presented to the effect that embedding semi-flexible (wormlike) ideal polymers into a fluctuating, flexible surface leads to an effective attractive orientational interaction between polymer segments that precipitates an…

凝聚态物理 · 物理学 2009-10-28 R. Podgornik

The Casimir-Polder-Lifshitz force felt by an atom near the surface of a substrate is calculated out of thermal equilibrium in terms of the dielectric function of the material and of the atomic polarizability. The new force decays like…

统计力学 · 物理学 2007-05-23 Mauro Antezza , Lev P. Pitaevskii , Sandro Stringari

Thermal fluctuations of a critical system induce long-ranged Casimir forces between objects that couple to the underlying field. For two dimensional (2D) conformal field theories (CFT) we derive an exact result for the Casimir interaction…

统计力学 · 物理学 2014-10-30 G. Bimonte , T. Emig , M. Kardar

Phase separation in a complex fluid with lamellar order has been studied in the case of cold thermal fronts propagating diffusively from external walls. The velocity hydrodynamic modes are taken into account by coupling the…

软凝聚态物质 · 物理学 2011-05-18 G. Gonnella , A. Lamura , A. Tiribocchi

We study the Casimir effect for a three dimensional system of ideal free massive Bose gas in a slab geometry with Zaremba and anti-periodic boundary conditions. It is found that for these type of boundary conditions the resulting Casimir…

统计力学 · 物理学 2018-04-09 Mir Mehedi Faruk , Shovon Biswas

Vortex-loop renormalization techniques are used to calculate the magnitude of the critical Casimir forces in superfluid films. The force is found to become appreciable when size of the thermal vortex loops is comparable to the film…

超导电性 · 物理学 2009-11-10 Gary A. Williams

We study the Casimir effect in a system composed of two Weyl semimetals (WSMs) separated by a gap filled with a chiral medium. We calculate the optical response of the material to chiral photons in order to calculate the Casimir force. We…

介观与纳米尺度物理 · 物理学 2020-07-08 M. Belén Farias , Alexander A. Zyuzin , Thomas L. Schmidt

We present a new Monte Carlo method to calculate Casimir forces acting on objects in a near-critical fluid, considering the two basic cases of a wall and a sphere embedded in a two-dimensional Ising medium. During the simulation, the…

统计力学 · 物理学 2014-06-19 Hendrik Hobrecht , Alfred Hucht

Within mean-field theory we calculate universal scaling functions associated with critical Casimir forces for a system consisting of three parallel cylindrical colloids immersed in a near-critical binary liquid mixture. For several…

软凝聚态物质 · 物理学 2015-06-22 T. G. Mattos , L. Harnau , S. Dietrich

In this talk I review various developments in the past year concerning quantum vacuum energy, the Casimir effect. In particular, there has been continuing controversy surrounding the temperature correction to the Lifshitz formula for the…

高能物理 - 理论 · 物理学 2009-05-12 K. A. Milton

We investigate the Casimir force between two dissimilar plane mirrors the material properties of which are described by Drude or Lorentz models. We calculate analytically the short and long distance asymptote of the force and relate its…

量子物理 · 物理学 2008-12-18 A. Lambrecht , I. G. Pirozhenko

We analyze the high temperature (or classical) limit of the Casimir effect. A useful quantity which arises naturally in our discussion is the ``relative Casimir energy", which we define for a configuration of disjoint conducting boundaries…

高能物理 - 理论 · 物理学 2014-11-18 J. Feinberg , A. Mann , M. Revzen

We review the theory of the Casimir effect using scattering techniques. After years of theoretical efforts, this formalism is now largely mastered so that the accuracy of theory-experiment comparisons is determined by the level of precision…

量子物理 · 物理学 2007-05-23 A. Lambrecht , P. A. Maia Neto , S. Reynaud
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