scholarly journals Gauge invariant fractional electromagnetic fields

2011 ◽  
Vol 375 (41) ◽  
pp. 3541-3546 ◽  
Author(s):  
Matheus Jatkoske Lazo
Keyword(s):  
Electromagnetic Fields ◽  
Gauge Invariant

Photoproduction of Gravitons in Static Electromagnetic Fields

1975 ◽  
Vol 53 (20) ◽  
pp. 2306-2311 ◽  
Author(s):  
G. Papini ◽  
S. -R. Valluri
Keyword(s):  
Magnetic Dipole ◽  
Electromagnetic Fields ◽  
Cross Sections ◽  
Gravitational Coupling ◽  
External Fields ◽  
Coupling Constant ◽  
Gauge Invariant ◽  
Gravitational Coupling Constant ◽  
Extended Sources ◽  
Divergence Free

The cross sections for the process of photoproduction of gravitons in Coulomb and magnetic dipole external fields have been calculated. The calculation, which is linear in the gravitational coupling constant κ, is completely covariant, manifestly gauge invariant, and divergence free. The results to this order in κ are exact. Expressions for the case of extended sources have also been obtained and found to be in agreement with the results of other authors.

Let there be Light in Tight Binding

1997 ◽  
Vol 491 ◽  
Author(s):  
P. Vogl ◽  
M. Graf ◽  
A. Görling
Keyword(s):  
Solid State ◽  
Electromagnetic Fields ◽  
Optical Constants ◽  
Tight Binding ◽  
Time Dependent ◽  
High Magnetic Fields ◽  
Gauge Invariant ◽  
Polar Materials ◽  
Wide Range ◽  
Tight Binding Method

ABSTRACTEmpirical tight-binding theory is generalized to incorporate time-dependent electromagnetic fields in a systematic and gauge-invariant manner that does not introduce any extra adjustable parameters. It is shown that this approach successfully predicts a wide range of solid state properties that have not been accessible within the tight binding method so far. We present applications such as optical constants, luminescence in heterostructures, properties in ultra-high magnetic fields and lattice dynamics in polar materials.

Effect of pulsed electromagnetic fields on maturation of regenerate bone in a rabbit limb lengthening model

2005 ◽  
Vol 24 (1) ◽  
pp. 2-10 ◽  
Author(s):  
Kenneth F. Taylor ◽  
Nozumu Inoue ◽  
Bahman Rafiee ◽  
John E. Tis ◽  
Kathleen A. McHale ◽  
...  
Keyword(s):  
Electromagnetic Fields ◽  
Limb Lengthening ◽  
Pulsed Electromagnetic Fields ◽  
Pulsed Electromagnetic

Effects of 60 Hz Electromagnetic Fields on Melatonin and Sleep in Rats

2001 ◽  
Author(s):  
Jeff Dyche ◽  
Michael Morrissey ◽  
Eric Powell ◽  
A. Michael Anch
Keyword(s):  
Electromagnetic Fields

Developing GIS portal to ensure sanitary and epidemiological surveillance of transferring radio engineering objects

2020 ◽  
Vol 99 (4) ◽  
pp. 344-350
Author(s):  
Evgeny V. Zibarev ◽  
A. S. Afanasev ◽  
O. V. Slusareva ◽  
T. I. Muragimov ◽  
V. A. Stepanets ◽  
...  
Keyword(s):  
Electromagnetic Fields ◽  
Analytical Data ◽  
Base Stations ◽  
Epidemiological Surveillance ◽  
Graphical Form ◽  
Residential Areas ◽  
Information Portal ◽  
Radiofrequency Electromagnetic Fields ◽  
Online Mode ◽  
Automated Processes

In recent years, in the Russian Federation there has been an increase in the levels of radiofrequency electromagnetic fields in residential areas, including due to an increase in the number of base stations (BS). The purpose of sanitary and epidemiological surveillance at the stages of placement and commissioning of base stations (BS) is to prevent their adverse effects on public health. The increase in the number of base stations, together with the advent of new electronic equipment and antennas, provide opportunities for improving the processes of their accounting at the stage of placement and monitoring of the levels of radiofrequency electromagnetic fields at the operation stage. This automation tool can be a geo-information portal for providing sanitary and epidemiological surveillance of cellular base stations. The prototype of the geo-information portal allows both calculating the size of sanitary protection zones (SPZ) and building restriction zones (RZ) from the BS in online mode, displaying the results of calculations in graphical form and issuing sanitary and epidemiological conclusions for the placement and operation of base stations. The geo-information portal has the ability to synchronize with the data of the radio frequency center. Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing will be able to receive up-to-date analytical data. There will be completely automated processes of collecting, processing and storing information on BS.

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