Results 71 to 80 of about 1,267,599 (162)

Scalar QED as a toy model for higher-order effects in classical gravitational scattering

open access: yesJournal of High Energy Physics, 2022
Quantum Electrodynamics (QED) serves as a useful toy model for classical observables in gravitational two-body systems with reduced complexity due to the linearity of QED.
Zvi Bern   +4 more
doaj   +1 more source

Engineering a Correlated Narrow‐Gap Semiconductor: Effects of Ga Substitution in EuZn2P2

open access: yesAdvanced Electronic Materials, Volume 12, Issue 19, 12 October 2026.
ABSTRACT The effect of Ga substitution on the electronic, magnetic, and low‐energy responses of the Zintl phase EuZn2P2${\rm EuZn}_2 {\rm P}_2$ is investigated by electrical transport, electron spin resonance (ESR), and terahertz time‐domain spectroscopy (THz‐TDS). Incorporating Ga into EuZn2P2${\rm EuZn}_2 {\rm P}_2$ (EuZn1.8Ga0.2P2${\rm EuZn}_{1.8} {\
Mateus Dutra   +13 more
wiley   +1 more source

Can Partial Structures Accommodate Inconsistent Science? [PDF]

open access: yes, 2009
The semantic approach to scientific representation is now long established as a favourite amongst philosophers of science. One of the foremost strains of this approach—the model-theoretic approach (MTA)—is to represent scientific theories as families of ...
Vickers, P   +2 more
core   +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

From Nano‐ to Picocavities: The Role of Atomistic Features

open access: yesSmall Structures, Volume 7, Issue 10, October 2026.
Atomistic features strongly affect the plasmonic response of Ag and Au nano‐ and picocavities. By analyzing induced charge densities, electric field maps, and localization areas, the role of atomistic morphology in controlling field confinement and enhancement is revealed, establishing a direct structure–property relation between atomic‐scale features ...
Tommaso Giovannini   +4 more
wiley   +1 more source

Eliminating Infinite Self-Energies From Classical Electrodynamics [PDF]

open access: yes, 2023
The theory of point-particles in classical electrodynamics has a well-known problem of infinite self-energy, and the same is true of quantum electrodynamics. Instead of concluding that there is no such thing as a true point-particle, it is shown here how
Hyman, Andrew T.
core   +1 more source

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

Ionospheric Scintillation Induced by Hot Flow Anomalies via Particle Precipitation

open access: yesAGU Advances, Volume 7, Issue 7, October 2026.
Abstract Ionospheric scintillation disrupts trans‐ionospheric radio signals and represents significant challenges for critical communication and navigation systems. Here we document that hot flow anomalies (HFAs), transient disturbances formed near Earth's bow shock, can contribute to scintillation near the cusp.
Jia‐Chen Zhao   +16 more
wiley   +1 more source

Propagation Dynamics of Fast Electron Beam and Its Electron Cyclotron Maser Emission

open access: yesJournal of Geophysical Research: Space Physics, Volume 131, Issue 10, October 2026.
Abstract Fast electron beams (FEBs) and coherent radio bursts both are very common plasma activity phenomena in the cosmos. The electron cyclotron maser (ECM) instability driven by FEBs trapped in magnetic fields can directly amplify radio wave radiations.
Ling Chen   +3 more
wiley   +1 more source

Local Selective Realism: shifting from Classical to Quantum Electrodynamics [PDF]

open access: yes, 2020
This article elaborates local selective realism in view of the shifting from classical to quantum electrodynamics. After some introductory remarks, we critically address what we call global selective realism, hence setting forth the background for ...
Soto Herrera, Cristián   +1 more
core   +1 more source

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