Results 91 to 100 of about 1,654,821 (235)

Classical electrodynamics in a space with spin noncommutativity of coordinates

open access: yesPhysics Letters B, 2016
We propose a relativistic Lorentz-invariant spin-noncommutative algebra. Using the Weyl ordering of noncommutative position operators, we find a mapping from a space of commutative functions into space of noncommutative functions.
V.M. Vasyuta, V.M. Tkachuk
doaj   +1 more source

Quantum Limitation to the Coherent Emission of Accelerated Charges

open access: yes, 2018
Accelerated charges emit electromagnetic radiation. According to classical electrodynamics if the charges move along sufficiently close trajectories they emit coherently, i.e., their emitted energy scales quadratically with their number rather than ...
Angioi, A., Di Piazza, A.
core   +1 more source

An Alternative Approach to Spontaneous Photon Triplets Generation

open access: yesAdvanced Physics Research, Volume 5, Issue 3, March 2026.
Day by day, communication and computing technologies are progressing at a lightning speed, which is particularly true of the quantum version of these technologies (QIST). Increasingly, these technologies are emerging from unusual and sometimes bewildering quantum optical effects, which are based on exotic quantum physical theories.
Serge Gauvin
wiley   +1 more source

A proposed measurement of optical orbital and spin angular momentum and its implications for photon angular momentum

open access: yesPhysics Letters B, 2018
The expression for the total angular momentum carried by a laser optical vortex beam, splits, in the paraxial approximation, into two terms which seem to represent orbital and spin angular momentum respectively.
Elliot Leader
doaj   +1 more source

About the Physical Reality of \Maxwell's Displacement Current" in Classical Electrodynamics

open access: yes, 2014
This work aims to provide a physical interpretation of the \Maxwell's displacement current" and generalize the use of the derivative function of the electrical ∞ux \d"=dt" in the magnetic fleld calculation.
M. Landini
semanticscholar   +1 more source

Plasmonic‐Quantum and Emitter's Finite‐Size Effects in Plasmon‐Emitter Coupling: A QHT–DFT Hybrid Approach

open access: yesNanophotonics, Volume 15, Issue 6, 27 March 2026.
Plasmon‐emitter interactions in a dimer are studied using a hybrid approach: density functional theory captures the molecular transition density of the p‐nitroaniline molecule, whereas quantum hydrodynamic theory models the plasmonic system. Comparison with a point dipole shows significant deviations in emission rates and spectral positions for gaps ...
Tadele Orbula Otomalo   +7 more
wiley   +1 more source

Monopoles, Clarified

open access: yesFortschritte der Physik, Volume 74, Issue 3, March 2026.
ABSTRACT We propose a manifestly duality‐invariant, Lorentz‐invariant, and local action to describe quantum electrodynamics in the presence of magnetic monopoles that derives from Sen's formalism. By employing field strengths as the dynamical variables, rather than potentials, this formalism resolves longstanding ambiguities in prior frameworks.
Aviral Aggarwal   +2 more
wiley   +1 more source

Toward Large Nonradiating Qubits: When Quantum Engineering Meets Photonics

open access: yesAdvanced Quantum Technologies, Volume 9, Issue 3, March 2026.
Nonradiating superconducting qubits suppress radiative losses through photonic‐inspired mechanisms such as anapole states and bound states in the continuum (BICs). This review surveys theoretical foundations and recent implementations of large, wavelength‐scale qubits that confine electromagnetic energy while maintaining coherence.
Alexey Basharin
wiley   +1 more source

Spin Three-Body Problem of Classical Electrodynamics with Radiation Terms (I) Derivation of Spin Equations

open access: yesResults in Nonlinear Analysis, 2021
In the present paper spin equations for three-body problem of classical electrodynamics are introduced. They should be considered jointly with 3-body equations of motion derived in a previous paper of the author.
Vasil G. Angelov
doaj  

Strong Polar Ionospheric Electron Density Depletion Under Prolonged Northward IMF Bz Condition

open access: yesEarth and Space Science, Volume 13, Issue 3, March 2026.
Abstract Previous studies have primarily focused on high‐latitude ionospheric‐thermospheric (I‐T) variabilities under southward interplanetary magnetic field (IMF) conditions, while rare studies have investigated the I‐T responses to due northward Bz (NBz), especially in the presence of strong IMF By conditions.
Tianyu Cao   +3 more
wiley   +1 more source

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