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The full sky cosmic microwave background polarization field can be decomposed into 'electric' and 'magnetic' components. Working in harmonic space we construct window functions that allow clean separation of the electric and magnetic modes…

Astrophysics · Physics 2009-11-06 Antony Lewis , Anthony Challinor , Neil Turok

A method is demonstrated to optimize a stellarator's geometry to eliminate magnetic islands and achieve other desired physics properties at the same time. For many physics quantities that have been used in stellarator optimization,…

Plasma Physics · Physics 2021-09-22 Matt Landreman , Bharat Medasani , Caoxiang Zhu

The energy-based vector hysteresis model of Francois-Lavet et al. establishes an implicit relation between magnetic fields and fluxes via internal magnetic polarizations which are determined by convex but non-smooth minimization problems.…

Numerical Analysis · Mathematics 2025-07-22 Herbert Egger , Felix Engertsberger , Andreas Schafelner

We analyze the interaction of a nanomagnet with a single photonic mode of a microcavity in a fully quantum-mechanical treatment and find that exceptionally large quantum-coherent magnet-photon coupling can be achieved. Coupling terms in…

Mesoscale and Nanoscale Physics · Physics 2015-05-13 Öney O. Soykal , M. E. Flatté

We report the realization of a planar transverse domain wall (TDW) with arbitrary tilting angle in a magnetic biaxial nanowire under a transverse magnetic field (TMF) pulse with fixed strength and optimized orientation profile. We smooth…

Mesoscale and Nanoscale Physics · Physics 2017-02-28 Mei Li , Jianbo Wang , Jie Lu

The possibility of generation of stable self-focusing beams in in-plane magnetized thin magnetic films is considered and theoretical conditions for the existence of such localized solutions are discussed. It is shown that for the definite…

Other Condensed Matter · Physics 2009-11-10 Ramaz Khomeriki

Equilibrium magnetization curve of a rigid finite-size spherical cluster of single-domain particles is investigated both numerically and analytically. The spatial distribution of particles within the cluster is random. Dipole-dipole…

Mesoscale and Nanoscale Physics · Physics 2018-10-15 Andrey A. Kuznetsov

Eigenstates of 2D charged electron-hole complexes in magnetic fields are considered. The operator formalism that allows one to partially separate the center-of-mass motion from internal degrees of freedom is presented. The scheme using…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 A. B. Dzyubenko

We study the complex visibilities of the cosmic microwave background anisotropies that are observables in interferometric observations of the cosmic microwave background, using the multipole expansion methods commonly adopted in analyzing…

Astrophysics · Physics 2009-12-31 Kin-Wang Ng

We prove Lieb-Thirring inequalities for Schr\"odinger operators with a homogeneous magnetic field in two and three space dimensions. The inequalities bound sums of eigenvalues by a semi-classical approximation which depends on the strength…

Spectral Theory · Mathematics 2015-05-27 Rupert L. Frank , Rikard Olofsson

The homogeneity of the microwave magnetic field is essential in controlling a large volume of ensemble spins, for example, in the case of sensitive magnetometry with nitrogen-vacancy (NV) centers in diamond. This is particularly important…

Quantum Physics · Physics 2026-05-14 Oleg Rezinkin , Marina Rezinkina , Takuya Kitamura , Rajan Paul , Fedor Jelezko

We construct three families of general magnetostatic axisymmetric exact solutions of Einstein-Maxwell equations in spherical coordinates, prolate, and oblates. The solutions obtained are then presented in the system of generalized…

General Relativity and Quantum Cosmology · Physics 2011-10-18 Cristian H. García-Duque , Gonzalo García-Reyes

Conventional electric field integral equation based theory is susceptible to the spurious internal resonance problem when the characteristic modes of closed perfectly conducting objects are computed iteratively. In this paper, we present a…

Mathematical Physics · Physics 2015-10-28 Qi I. Dai , Qin S. Liu , Hui Gan , Weng Cho Chew

The problem of natural convection in a laterally heated three-dimensional cubic cavity under the action of an externally imposed magnetic field is revisited. Flows at the Rayleigh number Ra=10^6 and the Hartmann number Ha=100, and three…

Fluid Dynamics · Physics 2018-05-15 A. Gelfgat , O. Zikanov

The Multimode Equivalent Network (MEN) formulation has been traditionally employed for the efficient and accurate analysis of waveguide devices. In this paper, we extend the use of the MEN to the analysis of zero thickness, multilayer…

This paper presents a robust numerical solution to the electromagnetic scattering problem involving multiple multi-layered cavities in both transverse magnetic and electric polarizations. A transparent boundary condition is introduced at…

Numerical Analysis · Mathematics 2023-08-14 Peijun Li , Xiaokai Yuan

A stable volume integral equation (VIE) solver based on polarization/magnetization currents is presented, for the accurate and efficient computation of the electromagnetic scattering from highly inhomogeneous and high contrast objects.We…

Numerical Analysis · Computer Science 2020-12-24 Ioannis P. Georgakis , Ilias I. Giannakopoulos , Mikhail S. Litsarev , Athanasios G. Polimeridis

We propose employing the extension of the Lehmann-Maehly-Goerisch method developed by Zimmermann and Mertins, as a highly effective tool for the pollution-free finite element computation of the eigenfrequencies of the resonant cavity…

Analysis of PDEs · Mathematics 2014-03-04 Gabriel Raúl Barrenechea , Lyonell Boulton , Nabile Boussaid

A novel polarisation modulation scheme for polarimeters based on Fabry-Perot cavities is presented. The application to the proposed HERA-X experiment aiming to measuring the magnetic birefringence of vacuum with the HERA superconducting…

Optics · Physics 2016-06-22 G. Zavattini , F. Della Valle , A. Ejlli , G. Ruoso

Using mean-field theory, we compute the evolution of the magnetic field in a cylinder with outer perfectly conducting boundaries, an imposed axial magnetic and electric field. The thus injected magnetic helicity in the system can be…

Plasma Physics · Physics 2012-03-27 Koen Kemel , Axel Brandenburg , Hantao Ji