scholarly journals Kinetics of electromagnetic field in nonequilibrium medium

2019 ◽  
Vol 27 (2) ◽  
pp. 17-28
Author(s):  
S. F. Lyagushyn ◽  
A. I. Sokolovsky ◽  
S. A. Sokolovsky
Keyword(s):  
Electromagnetic Field ◽  
Energy Density ◽  
Magnetic Fields ◽  
Evolution Equations ◽  
Average Field ◽  
Field Interaction ◽  
Nonequilibrium Processes ◽  
Electric And Magnetic Fields ◽  
Material Equations ◽  
Kinetics Of

Kinetics of electromagnetic field in noneqilibrim medium of atoms is studied on the basis of the Dicke model. The field is described by average electric and magnetic fields and their binary correlations. The atoms are considered in two-level approximation and assumed to be fixed in the space. States of the medium are described by the energy density. Nonresonant atom-field interaction is accounted phenomenologically. The theory is built on the Bogolyubov idea of the functional hypothesis that is the basis of his method of the reduced description of nonequilibrium processes. The investigation of the system is carried out in the framework of the Peletminsky–Yatsenko model. Atom-field interaction is assumed to be small and is taken into account up to the second contributions in the interaction included. Average electric and magnetic fields satisfy the Maxwell equations. Material equations for them express average current and charge densities through the average field. Evolution equations for the binary correlation of the field are constructed. Material equations for these equations express correlations field-current trough correlations field-field. The time equation for energy density of the medium is obtained. Density evolution is governed by the average field and field correlations. All material coefficients of the system are found.

The thermodynamics of bodies in static electromagnetic fields

1956 ◽  
Vol 52 (3) ◽  
pp. 546-552 ◽  
Author(s):  
V. Heine
Keyword(s):  
Electromagnetic Field ◽  
Energy Density ◽  
Magnetic Fields ◽  
Electromagnetic Fields ◽  
Permanent Magnets ◽  
Entropy Density ◽  
The Body ◽  
Thermodynamic Behaviour ◽  
Electric And Magnetic Fields

ABSTRACTThe thermodynamic behaviour of a body in a static electromagnetic field depends only on the field over the region of the body itself, whence its own thermodynamic behaviour is determined even in the presence of other polarizable media. Its behaviour depends only on the entropy density, for in fact no real energy density need exist. Also new formulae are developed for the energy and for the entropy of a body in electric and magnetic fields, including those due to permanent magnets.

scholarly journals The Quaternionic Commutator Bracket and Its Implications

Symmetry ◽  
2018 ◽  
Vol 10 (10) ◽  
pp. 513 ◽  
Author(s):  
Arbab Arbab ◽  
Mudhahir Al Ajmi
Keyword(s):  
Wave Function ◽  
Electromagnetic Field ◽  
Angular Momentum ◽  
Charged Particle ◽  
Magnetic Fields ◽  
Interaction Energy ◽  
Internal Structure ◽  
Magnetic Moments ◽  
Electric And Magnetic Fields ◽  
Aharonov Bohm

A quaternionic commutator bracket for position and momentum shows that the quaternionic wave function, viz. ψ ˜ = ( i c ψ 0 , ψ → ) , represents a state of a particle with orbital angular momentum, L = 3 ℏ , resulting from the internal structure of the particle. This angular momentum can be attributed to spin of the particle. The vector ψ → , points in an opposite direction of L → . When a charged particle is placed in an electromagnetic field, the interaction energy reveals that the magnetic moments interact with the electric and magnetic fields giving rise to terms similar to Aharonov–Bohm and Aharonov–Casher effects.

scholarly journals A Non-Local Action for Electrodynamics: Duality Symmetry and the Aharonov-Bohm Effect, Revisited

Symmetry ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 1191 ◽  
Author(s):  
Joan Bernabeu ◽  
Jose Navarro-Salas
Keyword(s):  
Electromagnetic Field ◽  
Magnetic Fields ◽  
Harmonic Oscillator ◽  
Local Action ◽  
Action Functional ◽  
Duality Symmetry ◽  
Electric And Magnetic Fields ◽  
Non Local ◽  
Bohm Effect ◽  
Aharonov Bohm

A non-local action functional for electrodynamics depending on the electric and magnetic fields, instead of potentials, has been proposed in the literature. In this work we elaborate and improve this proposal. We also use this formalism to confront the electric-magnetic duality symmetry of the electromagnetic field and the Aharonov–Bohm effect, two subtle aspects of electrodynamics that we examine in a novel way. We show how the former can be derived from the simple harmonic oscillator character of vacuum electrodynamics, while also demonstrating how the magnetic version of the latter naturally arises in an explicitly non-local manner.

scholarly journals Polariton Modes in Two-Dimensional Dispersive and Absorptive Photonic Crystals

2020 ◽  
Vol 9 (9) ◽  
pp. 648-652
Keyword(s):  
Electromagnetic Field ◽  
Photonic Crystal ◽  
Photonic Crystals ◽  
Evolution Equations ◽  
Equations Of Motion ◽  
Photonic Devices ◽  
Two Dimensional ◽  
Hamiltonian Method ◽  
Field Interaction ◽  
Two Dimensional Photonic Crystal

Two-dimensional photonic crystals play important role in practical photonic devices. In this study, Hamiltonian method is used to determine the evolution equations for the fields. This method allows us to determine the polariton modes inside a periodically structured medium. For a two-dimensional photonic crystal, the Hamiltonian for electromagnetic field interaction with structured medium is constructed and the evolution equations for fields are determined from Hamilton’s equations of motion. The polariton modes are found from the canonical form of the Hamiltonian.

scholarly journals Proton radiography of dynamic electric and magnetic fields in laser-produced high-energy-density plasmas

2009 ◽  
Vol 16 (5) ◽  
pp. 056304 ◽  
Author(s):  
C. K. Li ◽  
F. H. Séguin ◽  
J. A. Frenje ◽  
M. Manuel ◽  
D. Casey ◽  
...  
Keyword(s):  
Energy Density ◽  
Magnetic Fields ◽  
High Energy ◽  
High Energy Density ◽  
Proton Radiography ◽  
Electric And Magnetic Fields ◽  
High Energy Density Plasmas

scholarly journals INFLUENCE OF SUSPENSION OF WIRES ON THE ELECTROMAGNETIC FIELD OF A HIGH-VOLTAGE ELECTRIC TRANSMISSION LINE

2020 ◽  
Vol 2020 (1) ◽  
pp. 221-222
Author(s):  
Dmitriy Seredkin
Keyword(s):  
Electromagnetic Field ◽  
Magnetic Fields ◽  
Transmission Line ◽  
High Voltage ◽  
Software Package ◽  
Power Line ◽  
Electric Transmission ◽  
Electric Transmission Line ◽  
Electric And Magnetic Fields ◽  
The Wire

The conditions of electromagnetic safety on the route of a high-voltage power line are considered, taking into account the sag of the wire. As a result of modeling in the Fazonord software package, it was shown that taking into account the sag of the power line wire causes a significant change in the electric and magnetic fields at a normalized height

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