Results 41 to 50 of about 2,113 (173)

A note on Coulomb field

open access: yesPhysics Open, 2021
Starting from Coulomb gauge scheme, we can eliminate the instant Coulomb force and replace it by propagating retarded Coulomb force field, in the realm of classical electrodynamics.
Minoru Sugihara, Masayuki Ikeda
doaj   +1 more source

Traveling Fronts for (q,r)$(q, r)$‐Relativistic Operators: Existence and Asymptotic Properties

open access: yesMathematische Nachrichten, EarlyView.
ABSTRACT A new reaction–diffusion model governed by a (q,r)$(q, r)$‐relativistic type diffusion, generalizing the p$p$‐relativistic one and encompassing singular and/or degenerate diffusivity, is introduced. In the monostable case, some existence results for (decreasing) fronts are then provided, exploiting the study of a suitable two‐point problem ...
Pavel Drábek   +2 more
wiley   +1 more source

The Lagrangian and Hamiltonian analysis of some relativistic electrodynamics models and their quantization

open access: yesCondensed Matter Physics, 2009
The work is devoted to the study of the Lagrangian and Hamiltonian properties of some relativistic electrodynamics models and is a continuation of our previous investigations.
N.N. Bogolubov (Jr.), A.K. Prykarpatsky
doaj   +1 more source

Crucial Role of Magnetic Dipole and Anomalous Field Dependence in NiPS3

open access: yesSmall, EarlyView.
Torque magnetometry on the prototypical 2D anisotropic magnet NiPS3, together with relativistic density functional theory calculations, uncovers a distinct intrinsic magnetic anisotropy. The characteristic torque pattern, driven by a high‐field spin‐flop transition, reveals its magnetic response beyond standard XY or XXZ models and highlights the ...
Do Hoon Kiem   +8 more
wiley   +1 more source

Maxwell–Lorentz Electrodynamics Revisited via the Lagrangian Formalism and Feynman Proper Time Paradigm

open access: yesMathematics, 2015
We review new electrodynamics models of interacting charged point particles and related fundamental physical aspects, motivated by the classical A.M. Ampère magnetic and H. Lorentz force laws electromagnetic field expressions. Based on the Feynman proper
Nikolai N. Bogolubov   +2 more
doaj   +1 more source

Path integral quantization of generalized Stueckelberg electrodynamics: A Faddeev-Jackiw approach

open access: yesNuclear Physics B, 2023
We build a setup for path integral quantization through the Faddeev-Jackiw approach, extending it to include Grassmannian degrees of freedom, to be later implemented in a model of generalized electrodynamics that involves fourth-order derivatives in the ...
L.G. Caro   +3 more
doaj   +1 more source

Rare Lightning and Convection Characteristics During Two Successive Tornadoes in Southern China

open access: yesHigh Voltage, EarlyView.
ABSTRACT Systematic investigations into lightning characteristics of tornado storms in China remain scarce. This study comprehensively analyses rare lightning behaviour and overshooting top characteristics for two successive tornadoes during a long‐lived supercell in southern China on 27 April 2024.
Fengquan Li   +9 more
wiley   +1 more source

Wave Tracing: Generalizing The Path Integral To Wave Optics

open access: yesComputer Graphics Forum, EarlyView.
Abstract Modeling the wave nature of light and the propagation and diffraction of electromagnetic fields is crucial for the accurate simulation of many phenomena, yet wave simulations are significantly more computationally complex than classical ray‐based models.
Shlomi Steinberg, Matt Pharr
wiley   +1 more source

Special solutions of coupled classical harmonic oscillators with the addition of magnetic monopoles

open access: yesPhysics Open
In this paper, we undertake a thorough investigation into the existence of magnetic monopoles, elusive particles theorized to possess isolated north or south magnetic poles. These hypothetical entities have long captured the imagination of physicists and
Charlotte Rundberget
doaj   +1 more source

Electromagnetism as an emergent phenomenon: a step-by-step guide

open access: yesNew Journal of Physics, 2014
We give a detailed description of electrodynamics as an emergent theory from condensed-matter-like structures, not only per se but also as a warm-up for the study of the much more complex case of gravity.
Carlos Barceló   +3 more
doaj   +1 more source

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