Boyer-Lindquist space-times and beyond: Meta-material analogues [PDF]
, 2018 Physically reasonable stationary axisymmetric spacetimes can (under very mild technical conditions) be put into Boyer-Lindquist form. Unfortunately a metric presented in Boyer-Lindquist form is not well-adapted to the "quasi-Cartesian" meta-material ...
Schuster, Sebastian, Visser, Matt
core +2 more sources
A priori error indicator in the transformation method for problems with geometric uncertainties [PDF]
, 2013 Version éditeur de cette publication à l'adresse suivante : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6514655To solve stochastic problems with geometric uncertainties, one can transform the original problem in a domain with stochastic ...
CLENET, Stéphane +3 more
core +6 more sources
Quasi-stationary states of electrons interacting with strong electromagnetic field in two-barrier resonance tunnel nano-structure [PDF]
Condens. Matter Phys., 2012, vol. 15, No. 3, 33703:1-8, 2012 An exact solution of non-stationary Schrodinger equation is obtained for a one-dimensional movement of electrons in an electromagnetic field with arbitrary intensity and frequency. Using it, the permeability coefficient is calculated for a two-barrier resonance tunnel nano-structure placed into a high-frequency electromagnetic field. It is shown that a
arxiv +1 more source
Indifferent electromagnetic modes: bound states and topology [PDF]
, 2019 At zero energy the Dirac equation has interesting behaviour. The asymmetry in the number of spin up and spin down modes is determined by the topology of both space and the gauge field in which the system sits.
Horsley, S. A. R.
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Photon Self-Energy in a Color Superconductor [PDF]
, 2001 In a color superconductor the diquark condensates break spontaneously both the color and ordinary electromagnetism, leaving a remanining rotated U(1) symmetry unbroken.
Litim, Daniel F., Manuel, Cristina
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On the approximation of dispersive electromagnetic eigenvalue problems in 2D [PDF]
arXiv, 2021 We consider time-harmonic electromagnetic wave equations in composites of a dispersive material surrounded by a classical material. In certain frequency ranges this leads to sign-changing permittivity and/or permeability. Previously meshing rules were reported, which guarantee the convergence of finite element approximations to the related scalar ...
arxiv
Determination of Effective Permittivity and Permeability of Metamaterials from Reflection and Transmission Coefficients [PDF]
Phys. Rev. B 65 (2002) 195104, 2001 We analyze the reflection and transmission coefficients calculated from transfer matrix simulations on finite lenghts of electromagnetic metamaterials, to determine the effective permittivity and permeability. We perform this analysis on structures composed of periodic arrangements of wires, split ring resonators (SRRs) and both wires and SRRs. We find
arxiv +1 more source
Kinetic analysis of spin current contribution to spectrum of electromagnetic waves in spin-1/2 plasma, Part I: Dielectric permeability tensor for magnetized plasmas [PDF]
, 2016 The dielectric permeability tensor for spin polarized plasmas is derived in terms of the spin-1/2 quantum kinetic model in six-dimensional phase space. Expressions for the distribution function and spin distribution function are derived in linear approximations on the path of dielectric permeability tensor derivation. The dielectric permeability tensor
arxiv +1 more source
Monopoles in ferromagnetic metals
, 2012 The aim of this short review is to give an introduction to monopoles and to present theoretical derivation of two particular monopoles in ferromagnetic metals, a hedgehog monopole and a spin damping monopole.
Nakabayashi, Noriyuki +3 more
core +1 more source
Determination of dielectric permeability of substances by electromagnetic waveguide method
Journal of Physics and Electronics, 2020 A method for determining the complex permittivity of substances by the electromagnetic (EM) waveguide method in the microwave range using electrodynamics and the theory of multilayer dielectric structures is considered. The expression for the complex reflection coefficient of an EM wave in a waveguide with a substance sample is studied. Calculations of
E. R. Beznosova +4 more
openaire +2 more sources