Results 31 to 40 of about 1,274,174 (295)

On the Fractional Derivative of Dirac Delta Function and Its Application

open access: yesAdvances in Mathematical Physics, 2020
The Dirac delta function and its integer-order derivative are widely used to solve integer-order differential/integral equation and integer-order system in related fields. On the other hand, the fractional-order system gets more and more attention.
Zaiyong Feng, Linghua Ye, Yi Zhang
doaj   +1 more source

Lorentz covariance of optical Dirac equation and spinorial photon field

open access: yesNew Journal of Physics, 2021
In a recent paper (2014 New J. Phys. 16 093008) Barnett discussed the so-called optical Dirac equation and referred to the involved wave function as a spinor. But as he claimed explicitly, he did not really associate that wave function with a true spinor.
Xiao-Lu You, Chun-Fang Li
doaj   +1 more source

Dequantization of the Dirac monopole [PDF]

open access: yes, 2009
Copyright © 2009 The Royal Society. This is the author's final version of the article. The final publication is available from the link below.Using a sheaf-theoretic extension of conventional principal bundle theory, the Dirac monopole is formulated as a
Brody, DC
core   +1 more source

Measurement of the breakup probability of pionium atoms in a nickel target with the DIRAC spectrometer [PDF]

open access: yes, 2004
The DIRAC Collaboration aims to determine the lifetime of the pionium atom, a π + π − bound state, by measuring the breakup probability of such a bound state. This breakup probability measurement with the DIRAC spectrometer at CERN searches for an excess
Schütz, Christian Peter
core   +1 more source

Lorentz Invariance Violation and Modified Hawking Fermions Tunneling Radiation

open access: yesAdvances in High Energy Physics, 2016
Recently the modified Dirac equation with Lorentz invariance violation has been proposed, which would be helpful to resolve some issues in quantum gravity theory and high energy physics.
Shu-Zheng Yang   +3 more
doaj   +1 more source

Characterization of the non-homogenous Dirac-harmonic equation

open access: yesJournal of Inequalities and Applications, 2021
We introduce the non-homogeneous Dirac-harmonic equation for differential forms and characterize the basic properties of solutions to this new type of differential equations, including the norm estimates and the convergency of sequences of the solutions.
Guannan Shi, Shusen Ding, Bing Liu
doaj   +1 more source

DIRACGrid/DIRAC: None

open access: yes, 2021
DIRAC ...
Andrii Lytovchenko   +32 more
core   +1 more source

The modular Dirac equation [PDF]

open access: yes, 2022
We introduce a new equation we dubbed the modular Dirac equation to see and reconstruct a spin 1/2 particle at the center of a nearly $AdS_2$ spacetime in the entanglement wedge reconstruction paradigm and we study hidden symmetries of this spacetime ...
Rugina, C.
core   +1 more source

Electrodynamic absorber theory [PDF]

open access: yes, 2010
This work deals with questions that arise in classical and quantum electrodynamics when describing the phenomena of radiation reaction and pair creation. The two guiding ideas are the absorber idea of Wheeler and Feynman (i.e.
Deckert, Dirk-André
core   +1 more source

Transparent Topological Meta-Diplexer via Tightly Confined Valley Surface States. [PDF]

open access: yesAdv Sci (Weinh)
An optically transparent topological metasurface supporting tightly confined valley surface states enables robust and flexible wave routing in an ultrathin platform. A compact transparent meta‐diplexer with spatially and spectrally separated channels is realized, while communication experiments verify high‐fidelity signal transmission, opening new ...
Li S   +5 more
europepmc   +2 more sources

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