Results 81 to 90 of about 1,299,950 (203)
Physics 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
Quiet Time Ionosphere‐Thermosphere Predictability During Sudden Stratospheric Warmings in TIE‐GCM
Space Weather, Volume 24, Issue 11, November 2026.Abstract We investigate the predictability of the ionosphere‐thermosphere (IT) region during sudden stratospheric warmings (SSWs) by using subseasonal hindcasts in the Community Earth System Model, version 2 with the Whole Atmosphere Community Climate Model (CESM2 [WACCM6]) to force the lower boundary of the TIE‐GCM.
B. C. Martinez, N. M. Pedatella, Xian Lu
wiley +1 more source
Eliminating Infinite Self-Energies From Classical Electrodynamics [PDF]
, 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.
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Classical electrodynamics in a space with spin noncommutativity of coordinates
Physics 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
Global Ionospheric Responses to Four X‐Class Solar Flares in November 2025
Space Weather, Volume 24, Issue 11, November 2026.Abstract We investigate global ionospheric responses to four X‐class solar‐disk flares that occurred in November 2025 from the same solar active region, using multi‐instrument observations including GNSS, ionosonde, geomagnetic and GOES solar irradiance data. Pronounced dayside TEC enhancements are observed for three flares (#2 X1.2, #3 X5.1, and #4 X4.
Lei Liu, Shasha Zou
wiley +1 more source
Can Partial Structures Accommodate Inconsistent Science? [PDF]
, 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
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Space Weather, Volume 24, Issue 11, November 2026.Abstract Subauroral ion drifts (SAID) are narrow, intense westward plasma flows. However, their narrow latitudinal distribution and possible overlap with broader subauroral flows pose significant challenges for accurate modeling. This study proposes a dual‐modal model that takes magnetic latitude, magnetic local time, day of year, solar F10.7 index ...
Haobo Hu +6 more
wiley +1 more source
The Dirac equation, the concept of quanta, and the description of interactions in quantum electrodynamics [PDF]
, 2010 In this article the Dirac equation is used as a guideline to the historical emergence of the concept of quanta, associated with the quantum field.
bacelar valente, mario
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Local Selective Realism: shifting from Classical to Quantum Electrodynamics [PDF]
, 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
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Photons and temporality in quantum electrodynamics [PDF]
, 2008 The lowest order processes described within quantum electrodynamics are free from the problem with infinities in the theory, and can be dealt with disregarding the need for charge and mass renormalization.
Bacelar Valente, Mario
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