Concept
Électrodynamique
Publications associées (56)
Roger F. Harrington and the Method of Moments: Part 2: Electrodynamics
The method of moments (MOM), as introduced by Roger F. Harrington more than 50 years ago, is reviewed in the context of the classic potential integral equation (IE) formulations applied to both electrostatic (part 1) and electrodynamic or full-wave problem ...
Piscataway2024Roger F. Harrington and the Method of Moments: Part 1: Electrostatics
The method of moments (MOM), as introduced by R. F. Harrington more than 50 years ago, is reviewed in the context of the classic potential integral equation (PIE) formulations applied to both electrostatic (part 1) and electrodynamic, or full-wave, problem ...
Piscataway2024Cavity-Mediated Coupling of Terahertz Antiferromagnetic Resonators
Jean-Philippe Ansermet, Marcin Bialek
Coupling of space-separated resonators is interesting for quantum and communication technologies. In this work, we show that antiferromagnetic resonance in separated parallel-plane slabs of hematite (alpha-Fe2O3) couple cooperatively to terahertz electroma ...
AMER PHYSICAL SOC2023A review of the modeling approaches of the lightning M-component with special attention to their current and electric field characteristics
Marcos Rubinstein, Mohammad Azadifar, Farhad Rachidi-Haeri, Carlo Alberto Nucci, Qi Li
In this paper, we present the characteristics of current, electric fields and modeling approaches of lightning M-component mode of charge transfer. We consider both the classical M-components (occurring after return strokes) and M-component-type ICC (Initi ...
2023Hints of the Photonic Nature of the Electromagnetic Fields in Classical Electrodynamics
Several recent publications show that the electromagnetic radiation generated by transmitting antennas satisfy the following universal conditions: The time domain radiation fields satisfy the condition A ≥ h/4π ⇒ q ≥ e where A is the action of the radiatio ...
2023On the reconstruction of the attenuation function of a return-stroke current from the Fourier Transform of finite-duration measurements
A correct representation of the lightning current is crucial when the electromagnetic field radiated to a point of interest has to be computed. Based on the engineering models of Transmission Line type, such representation involves the knowledge of the ret ...
2022Effective Models and Numerical Homogenization for Wave Propagation in Heterogeneous Media on Arbitrary Timescales
Timothée Noé Pouchon, Assyr Abdulle
A family of effective equations for wave propagation in periodic media for arbitrary timescales O(epsilon-alpha), where epsilon MUCH LESS-THAN1 is the period of the tensor describing the medium, is proposed. The well-posedness of the effective equations of ...
SPRINGER2020Topology and broken Hermiticity
Topology and symmetry have emerged as compelling guiding principles to predict and harness the propagation of waves in natural and artificial materials. Be it for quantum particles (such as electrons) or classical waves (such as light, sound or mechanical ...
2020Electromagnetic fields in a time-varying medium: Exceptional points and operator symmetries
Romain Christophe Rémy Fleury, Theodoros Koutserimpas
In this paper, we study the interactions of electromagnetic waves with a non-dispersive dynamic medium that is temporally dependent. Electromagnetic fields under material time-modulation conserve their momentum but not their energy. We assume a time-variat ...
2020Spin-wave coupling to electromagnetic cavity fields in dysposium ferrite
Jean-Philippe Ansermet, Arnaud Magrez, Marcin Bialek
Coupling of spin waves with electromagnetic cavity field is demonstrated in an antiferromagnet, dysprosium ferrite (DyFeO3). By measuring transmission at 0.2-0.35 THz and sweeping sample temperature, magnon-photon coupling signatures were found at crossing ...
AMER PHYSICAL SOC2020