Results 21 to 30 of about 983,181 (198)

The Changes in Electrical and Interfacial Properties of Polyimide Exposed to Dielectric Barrier Discharge in SF6 Medium

open access: yesThe Scientific World Journal, 2013
The formation mechanism of space charges in polyimide (PI) which was exposed to dielectric barrier discharge (DBD) in SF6 medium and the effects of the space charges on interfacial and electrical properties of PI were investigated.
Hafiz Z. Alisoy, Murat Koseoglu
doaj   +1 more source

Soft charges from the geometry of field space

open access: yesJournal of High Energy Physics, 2020
Infinite sets of asymptotic soft-charges were recently shown to be related to new symmetries of the S-matrix, spurring a large amount of research on this and related questions.
Aldo Riello
doaj   +1 more source

Higher-spin flat space cosmologies with soft hair

open access: yesJournal of High Energy Physics, 2017
We present and discuss near horizon boundary conditions for flat space higher-spin gravity in three dimensions. As in related work our boundary conditions ensure regularity of the solutions independently of the charges. The asymptotic symmetry algebra is
Martin Ammon   +4 more
doaj   +1 more source

Dyon production from near-extremal Kerr–Newman–(anti-)de Sitter black holes

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
Using the enhanced symmetry in the near-horizon region of the near-extremal dyonic Kerr–Newman (KN) black hole in the (A)dS space, we find the exact solutions for dyonic charged scalar field in terms of the hypergeometric function and explicitly compute ...
Chiang-Mei Chen, Sang Pyo Kim
doaj   +1 more source

Electric Model for Electromagnetic Wave Fields

open access: yesIEEE Access, 2021
This paper presents the first theoretical framework that defines the electric infinitesimal structure model of electromagnetic waves. This model represents the electromagnetic fields by electric field components only.
Waseem G. Shadid, Reem Shadid
doaj   +1 more source

Space Charge Effects

open access: yes, 2014
The space charge forces are those generated directly by the charge distribution, with the inclusion of the image charges and currents due to the interaction of the beam with a perfectly conducting smooth pipe. Space charge forces are responsible for several unwanted phenomena related to beam dynamics, such as energy loss, shift of the synchronous phase
FERRARIO, MASSIMO   +2 more
openaire   +3 more sources

Contribution of space charges to the polarization of ferroelectric superlattices and its effect on dielectric properties [PDF]

open access: yes, 2010
A theoretical model is developed for ferroelectric bilayers and multilayer heterostructures that employs a nonlinear Landau-Devonshire formalism coupled with a detailed analysis of the depolarizing fields arising from the polarization mismatch across ...
Alpay, S. P.   +3 more
core   +1 more source

Null boundary phase space: slicings, news & memory

open access: yesJournal of High Energy Physics, 2021
We construct the boundary phase space in D-dimensional Einstein gravity with a generic given co-dimension one null surface N $$ \mathcal{N} $$ as the boundary.
H. Adami   +5 more
doaj   +1 more source

Freezing of Moduli by N=2 Dyons [PDF]

open access: yes, 1996
In N=2 ungauged supergravity we have found the most general double-extreme dyonic black holes with arbitrary number n_v of constant vector multiplets and n_h of constant hypermultiplets. They are double-extreme: 1) supersymmetric with coinciding horizons,
Kallosh, Renata   +2 more
core   +2 more sources

Stiefel-Whitney topological charges in a three-dimensional acoustic nodal-line crystal

open access: yesNature Communications, 2023
Band topology of materials describes the extent Bloch wavefunctions are twisted in momentum space. Such descriptions rely on a set of topological invariants, generally referred to as topological charges, which form a characteristic class in the ...
Haoran Xue   +6 more
doaj   +1 more source

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