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The interaction between electromagnetic waves and objects is strongly affected by the shape and material composition of the latter. Artificially created materials, formed by a subwavelength structuring of their unit cells, namely…

经典物理 · 物理学 2018-02-07 Dmitry Filonov , Andrey Shmidt , Amir Boag , Pavel Ginzburg

We develop a transfer-matrix formulation of the scattering of electromagnetic waves by a general isotropic medium which makes use of a notion of electromagnetic transfer matrix $\mathbf{M}$ that does not involve slicing of the scattering…

量子物理 · 物理学 2020-09-24 Farhang Loran , Ali Mostafazadeh

We outline a global approach to scattering theory in one dimension that allows for the description of a large class of scattering systems and their $\mathcal{P}$-, $\mathcal{T}$-, and $\mathcal{P}\mathcal{T}$-symmetries. In particular, we…

量子物理 · 物理学 2019-01-25 Ali Mostafazadeh

This manuscript proves the energy scattering of global solutions to a repulsive fourth-order generalized Hartree equation with non-radial data in the inter-critical regime. This work uses a new approach due to Dodson-Murphy [4] and extends…

偏微分方程分析 · 数学 2021-09-20 Tarek Saanouni , Hanene Hezzi

We generalize the concept of parity-time symmetric structures with the goal to create meta-atoms exhibiting extraordinary abilities to overcome the presumed limitations in the scattering of overall lossless particles, such as non-zero…

光学 · 物理学 2018-02-14 M. Safari , M. Albooyeh , C. R. Simovski , S. A. Tretyakov

In this paper we report results for magnetic observables of finite spin clusters composed of S=1/2 ions. We consider clusters of two, three and four spins in distinct spatial arrangements, with isotropic Heisenberg interactions of various…

强关联电子 · 物理学 2009-11-10 J. T. Haraldsen , T. Barnes , J. L. Musfeldt

A spherical tensor expansion is carried out to express the resonant inelastic scattering cross-section as a sum of products of fundamental spectra with tensors involving wavevectors and polarization vectors of incident and scattered…

强关联电子 · 物理学 2014-05-20 Amélie Juhin , Christian Brouder , Frank De Groot

We explore the total cross section of ground state polar molecules in an electric field at various energies, focusing on RbCs and RbK. An external electric field polarizes the molecules and induces strong dipolar interactions leading to…

原子物理 · 物理学 2009-11-13 Christopher Ticknor

We consider a flat lattice of dipoles modeled by harmonic oscillators interacting with the electromagnetic field in dipole approximation. Eliminating the variables from the coupled equations of motion, we come to effective Maxwell…

量子物理 · 物理学 2015-06-19 M. Bordag

Utilizing the scales theory of electromagnetic theory, the anisotropic dielectric material is reconstructed into an isotropic medium. The analytic expressions of scattering field and the scattering breadth for an anisotropic material…

经典物理 · 物理学 2010-09-15 Y-L Li , J Li

In this letter, we study the scattering of spin-$\frac{1}{2}$ particles from a spin-independent parity time ($\cal PT$)-symmetric complex potential, and for the first time, theoretically demonstrate the coexistence of $\cal PT$-symmetric…

量子物理 · 物理学 2020-08-07 Ege Özgün , Tuğrul Hakioğlu , Ekmel Özbay

We extend a field theoretic approach for the investigation of the electronic charge-current density response of crystalline systems to arbitrary applied electromagnetic fields. The approach leads to the introduction of microscopic…

介观与纳米尺度物理 · 物理学 2020-07-24 Perry T. Mahon , J. E. Sipe

The optical properties of infinite planar array of scattering particles, metasurfaces and metagratings, are attracting special attention lately for their rich phenomenology, including both plasmonic and high-refractive-index dielectric…

A universal numerical method is developed for the investigation of magnetic neutron scattering. By applying the pseudospectral-time-domain (PSTD) algorithm to the spinor version of the Schr\"odinger equation, the evolution of the spin-state…

量子物理 · 物理学 2024-12-31 Kun Chen

This paper is concerned with the inverse electromagnetic scattering problem for anisotropic media. We use the interior resonant modes to develop an inverse scattering scheme for imaging the scatterer. The whole procedure consists of three…

偏微分方程分析 · 数学 2022-09-12 Youzi He , Hongjie Li , Hongyu Liu , Xianchao Wang

A micromagnetic framework for magnetic small-angle neutron scattering (SANS) is presented that accounts for weak symmetric anisotropic exchange in centrosymmetric nanocrystalline ferromagnets. The exchange interaction is expressed via a…

介观与纳米尺度物理 · 物理学 2026-02-25 Konstantin L. Metlov , Vladislav D. Zaporozhets

We solve for the electronic Raman scattering response functions on an infinite-dimensional hypercubic lattice employing dynamical mean field theory. This contribution extends previous work on the nonresonant response to include the mixed…

强关联电子 · 物理学 2007-05-23 A. M. Shvaika , O. Vorobyov , J. K. Freericks , T. P. Devereaux

We provide a detailed discussion on the electromagnetic modeling and classification of polarization converting bianisotropic metasurfaces. To do so, we first present a general approach to compute the scattering response of such…

光学 · 物理学 2021-09-15 Karim Achouri , Olivier J. F. Martin

This paper aims at studying the angular scattering properties of bianisotropic metasurfaces and at clarifying the different roles played by tangential and normal polarization densities. Different types of metasurfaces are considered for…

光学 · 物理学 2018-08-27 Karim Achouri , Olivier J. F. Martin

We investigate electromagnetic scattering of normally irradiated gyrotropic, magneto-optical core-shell cylinders using Lorenz-Mie theory. A general expression for time-averaged electromagnetic energy inside a coated gyroelectric and…

光学 · 物理学 2017-12-19 Tiago J. Arruda , Alexandre S. Martinez , Felipe A. Pinheiro