Results 11 to 20 of about 8,528 (252)

A priori error indicator in the transformation method for problems with geometric uncertainties [PDF]

open access: yes, 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   +7 more sources

Boyer-Lindquist space-times and beyond: Meta-material analogues [PDF]

open access: yes, 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

Effect of electromagnetic permeability on transition temperature of superconductivity

open access: yesInternational Journal of Modern Physics B, 2023
The description of superconductivity at high-temperature is a problem that has recently been addressed. Transition temperature of superconductivity, [Formula: see text], depends on the lattice structure type, size and room pressure. In super-lattices and low-dimensional layered nanostructures, [Formula: see text] is increased by increasing the ...
M. M. Bagheri-Mohagheghi   +4 more
openaire   +2 more sources

Quantum levitation by left-handed metamaterials [PDF]

open access: yes, 2007
Left-handed metamaterials make perfect lenses that image classical electromagnetic fields with significantly higher resolution than the diffraction limit. Here we consider the quantum physics of such devices.
Casimir H B G   +20 more
core   +6 more sources

Photon Self-Energy in a Color Superconductor [PDF]

open access: yes, 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
core   +2 more sources

Electromagnetics with time-varied vacuum permittivity and permeability

open access: yes, 2023
Manuscript and Supplemental document, 27 pages, 11 ...
openaire   +2 more sources

How does the electromagnetic field couple to gravity, in particular to metric, nonmetricity, torsion, and curvature? [PDF]

open access: yes, 2000
The coupling of the electromagnetic field to gravity is an age-old problem. Presently, there is a resurgence of interest in it, mainly for two reasons: (i) Experimental investigations are under way with ever increasing precision, be it in the laboratory ...
A. Einstein   +73 more
core   +2 more sources

Electromagnetic Wave Propagation in Media with Indefinite Permittivity and Permeability Tensors [PDF]

open access: yesPhysical Review Letters, 2003
We study the behavior of wave propagation in materials for which not all of the principle elements of the permeability and permittivity tensors have the same sign. We find that a wide variety of effects can be realized in such media, including negative refraction, near-field focusing and high impedance surface reflection.
Smith, D. R., Schurig, D.
openaire   +3 more sources

Transformation Optics, Generalized Cloaking and Superlenses

open access: yes, 2009
In this paper, transformation optics is presented together with a generalization of invisibility cloaking: instead of an empty region of space, an inhomogeneous structure is transformed via Pendry's map in order to give, to any object hidden in the ...
Geuzaine, Christophe   +2 more
core   +3 more sources

Analogy electromagnetism-acoustics: Validation and application to local impedance active control for sound absorption [PDF]

open access: yes, 1998
An analogy between electromagnetism and acoustics is presented in 2D. The propagation of sound in presence of absorbing material is modeled using an open boundary microwave package.
Furstoss, M.   +2 more
core   +3 more sources

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