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相关论文: On the fermionic van der Waals and Casimir-Polder …

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We investigate the temperature dependence of the Casimir-Polder interaction in the electrostatic limit. This unusual phenomenon relies on the coupling between a virtual atomic transition and a thermal excitation of surface polariton modes.…

The type-II Weyl/Dirac fermions are a generalization of conventional or type-I Weyl/Dirac fermions, whose conic spectrum is tilted such that the Fermi surface becomes lines in two dimensions, and surface in three dimensions rather than…

介观与纳米尺度物理 · 物理学 2017-05-15 Ze-Min Huang , Jianhui Zhou , Shun-Qing Shen

Interactions induced by electromagnetic fluctuations, such as van der Waals and Casimir forces, are of universal nature present at any length scale between any types of systems with finite dimensions. Such interactions are important not…

We investigate Thirring-like models containing fermionic and scalar fields propagating in 2-dimensional space time. The corresponding conformal algebra is studied and we disprove a conjecture relating the finite size effects to the central…

高能物理 - 理论 · 物理学 2009-10-22 I. Sachs , A. Wipf , A. Dettki

We introduce the concept of a photonic Dirac monopole, appropriate for photonic crystals, metamaterials and 2D materials, by utilizing the Dirac-Maxwell correspondence. We start by exploring vacuum where the reciprocal momentum space of…

光学 · 物理学 2018-12-12 Todd Van Mechelen , Zubin Jacob

Systematic description of a spin one-half system endowed with magnetic moment or any other two-level system (qubit) interacting with the quantized electromagnetic field is developed. This description exploits a close analogy between a…

量子物理 · 物理学 2009-11-13 Iwo Bialynicki-Birula , Tomasz Sowinski

Recently, a new functional analytic construction of quasi-free states for a self-dual CAR algebra has been presented in \cite{Felix2}. This method relies on the so-called strong mass oscillation property. We provide an example where this…

数学物理 · 物理学 2022-02-24 Nicolò Drago , Simone Murro

We explore theoretically the optomechanical interaction between a light field and a mechanical mode of ultracold fermionic atoms inside a Fabry-P\'{e}rot cavity. The low-lying phonon mode of the fermionic ensemble is a collective density…

量子物理 · 物理学 2010-02-09 R. Kanamoto , P. Meystre

On the basis of macroscopic quantum electrodynamics and point-scattering techniques, we derive a closed expression for the Casimir-Polder force between a ground-state atom and a small magnetodielectric sphere in an arbitrary environment. In…

量子物理 · 物理学 2010-02-18 Agnes Sambale , Stefan Yoshi Buhmann , Stefan Scheel

We present a privileged Fock quantization of a massive Dirac field in a closed Friedmann-Robertson-Walker cosmology, partially selected by the criteria of invariance of the vacuum under the symmetries of the field equations, and unitary…

广义相对论与量子宇宙学 · 物理学 2015-11-11 Jerónimo Cortez , Beatriz Elizaga Navascués , Mercedes Martín-Benito , Guillermo A. Mena Marugán , José M. Velhinho

We consider an Unruh-DeWitt detector interacting with a massless Dirac field. Assuming that the detector is moving along an hyperbolic trajectory, we modeled the effects of fluctuations in the event horizon using a Dirac equation with…

高能物理 - 理论 · 物理学 2015-06-04 C. H. G. Bessa , J. G. Duenas , N. F. Svaiter

We compute the interaction energies of a two-atom system placed in the middle of a perfectly reflecting planar cavity, in the perturbative regime. Explicit expressions are provided for the van der Waals potentials of two polarisable atomic…

量子物理 · 物理学 2017-11-01 M. Donaire , J. M. Muñoz-Castañeda , L. M. Nieto

Two-dimensional Dirac semimetal with tilted Dirac cone has recently attracted increasing interest. Tilt of Dirac cone can be realized in a number of materials, including deformed graphene, surface state of topological crystalline insulator,…

强关联电子 · 物理学 2018-11-21 Zhao-Kun Yang , Jing-Rong Wang , Guo-Zhu Liu

Casimir-type forces, such as those between two neutral conducting plates, or between a sphere, atom or molecule and a plate have been widely studied and are becoming of increasing significance, for example, in nanotechnology. A key…

量子物理 · 物理学 2014-03-24 Alvaro M. Alhambra , Achim Kempf , Eduardo Martin-Martinez

We use Pseudo Quantum Electrodynamics to study massive (2+1)D Dirac systems interacting electromagnetically via a U(1) gauge field in (3+1)D. It was recently found in Ref. [1], that an interaction-induced Quantum Hall Effect (QHE) and…

强关联电子 · 物理学 2017-02-10 S. H. Kooi , N. Menezes , Van Sérgio Alves , C. Morais Smith

Motivated by recent experimental advances in creating polar molecular gases in the laboratory, we theoretically investigate the many body effects of two-dimensional dipolar systems with the anisotropic and $1/r^3$ dipole-dipole…

量子气体 · 物理学 2010-12-20 Qiuzi Li , E. H. Hwang , S. Das Sarma

In this work we show how the criterion of asymptotic Hamiltonian diagonalization originated in hybrid quantum cosmology serves to pick out a unique vacuum for the Dirac field in de Sitter, in the context of quantum field theory in curved…

广义相对论与量子宇宙学 · 物理学 2020-07-07 Beatriz Elizaga Navascués , Guillermo A. Mena Marugán , Santiago Prado

We argue that the results for the vacuum forces on a slab and on an atom embedded in a magnetodielectric medium near a mirror, obtained using a recently suggested Lorentz-force approach to the Casimir effect, are equivalent to the…

量子物理 · 物理学 2009-11-11 M. S. Tomas

Casimir forces of massive fermionic Dirac fields are calculated for parallel plates geometry in spatial space with dimension d and imposing bag model boundary conditions.It is shown that in the range of ma>>1 where m is mass of fields…

量子物理 · 物理学 2012-08-27 Amir H. Abbassi &A. R. Sadre Momtaz

In this paper, we consider the fermionic Casimir effect under a new type of space-time topology using the concept of quotient topology. The relation between the new topology and that in Ref. \cite{Feng,Zhai3} is something like that between…

高能物理 - 理论 · 物理学 2011-06-30 Xiang-hua Zhai , Xin-zhou Li , Chao-Jun Feng