scholarly journals Polarization operator of a photon in a magnetic field

2016 ◽  
Vol 123 (2) ◽  
pp. 197-204
Author(s):  
V. M. Katkov
Keyword(s):  
Magnetic Field ◽  
Polarization Operator

scholarly journals ELECTRON MASS OPERATOR IN A STRONG MAGNETIC FIELD

2002 ◽  
Vol 17 (04) ◽  
pp. 231-235 ◽  
Author(s):  
A. V. KUZNETSOV ◽  
N. V. MIKHEEV ◽  
M. V. OSIPOV
Keyword(s):  
Magnetic Field ◽  
Perturbation Theory ◽  
Strong Magnetic Field ◽  
Virtual Photon ◽  
Strong Field ◽  
Mass Operator ◽  
Polarization Operator ◽  
Landau Levels ◽  
Electron Mass ◽  
Photon Polarization

The electron mass operator in a strong magnetic field is calculated by summation of the leading log contributions in all orders of the perturbation theory. An influence of the strong field on the virtual photon polarization operator is taken into account. The contribution of higher Landau levels of virtual electrons, along with the ground Landau level, is shown to be essential in the leading log approximation.

W-Boson contribution to photon polarization operator in an external magnetic field

1986 ◽  
Vol 29 (5) ◽  
pp. 408-412
Author(s):  
A. V. Borisov ◽  
V. Ch. Zhukovskii ◽  
M. Yu. Knizhnikov
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
W Boson ◽  
Polarization Operator ◽  
Photon Polarization

scholarly journals Two-Point One-Loop Fermionic Amplitudes in Constant Homogeneous Magnetic Field

2019 ◽  
Vol 201 ◽  
pp. 09003
Author(s):  
Alexandra Dobrynina ◽  
Ilya Karabanov ◽  
Alexander Parkhomenko ◽  
Lubov Vassilevskaya
Keyword(s):  
Magnetic Field ◽  
Anomalous Magnetic Moment ◽  
Electromagnetic Interaction ◽  
Axial Vector ◽  
Polarization Operator ◽  
Homogeneous Magnetic Field ◽  
Photon Polarization ◽  
Field Limit ◽  
Pseudo Scalar ◽  
Tensor Current

Two-point one-loop fermionic amplitudes modifiled by a constant homogeneous magnetic fileld are studied. In addition to the amplitudes resulted after an insertion of scalar, pseudoscalar, vector and axial-vector fermionic currents, we calculate similar amplitudes with the tensor and (pseudo)scalar vertices. The crossed-field limit of these amplitudes is presented. The tensor current is a fermionic part of the Pauli Lagrangian relevant for the electromagnetic interaction of fermions through the anomalous magnetic moment and its contribution to the photon polarization operator is briefly discussed.

scholarly journals Strong magnetic fields in gauge theories

2021 ◽  
Vol 18 (2 Jul-Dec) ◽  
Author(s):  
Hugo Celso Pérez Rojas ◽  
Jorge Luis Acosta Ávalo
Keyword(s):  
Magnetic Field ◽  
Quantum Electrodynamics ◽  
Chemical Potential ◽  
Polarization Operator ◽  
Cpt Invariance ◽  
Spatial Symmetry ◽  
Photon Propagation ◽  
Self Energy ◽  
The Standard Model ◽  
The Magnetic Field

The problem of photon propagation in a medium in presence of a strong magnetic field in the frame of quantum electrodynamics is discussed in the present paper, based on previous literature in this area. The breaking of the spatial symmetry by the magnetic field determine the existence of a set of basic vectors and tensors which must satisfy the gauge and CPT invariance of quantum electrodynamics. The charge symmetric and non-symmetric cases are discussed. In the second case the Faraday effect is produced. A chiral current arises, associated to a pseudovector eigenvector ofthe polarization operator (due to the breaking of the spatial symmetry by the external magnetic field), related to the so-called axial anomaly. The path integrals and functional derivation are widely used to obtain the self-energy and vertex operators, and the Dyson equations. The inadequate introduction of a chiral chemical potential in the standard model is discussed for the Weinberg-Salam model for electroweak interactions.

Magnetic-field strengths from optical polarization data

1967 ◽  
Vol 31 ◽  
pp. 381-383
Author(s):  
J. M. Greenberg
Keyword(s):  
Magnetic Field ◽  
Optical Polarization ◽  
Polarization Data ◽  
Term Model ◽  
Source Of Information ◽  
Field Strengths

Van de Hulst (Paper 64, Table 1) has marked optical polarization as a questionable or marginal source of information concerning magnetic field strengths. Rather than arguing about this–I should rate this method asq+-, or quarrelling about the term ‘model-sensitive results’, I wish to stress the historical point that as recently as two years ago there were still some who questioned that optical polarization was definitely due to magnetically-oriented interstellar particles.

Observing the galactic magnetic field

1967 ◽  
Vol 31 ◽  
pp. 375-380
Author(s):  
H. C. van de Hulst
Keyword(s):  
Magnetic Field ◽  
Fair Agreement ◽  
Solar Neighbourhood ◽  
Galactic Magnetic Field ◽  
The Magnetic Field

Various methods of observing the galactic magnetic field are reviewed, and their results summarized. There is fair agreement about the direction of the magnetic field in the solar neighbourhood:l= 50° to 80°; the strength of the field in the disk is of the order of 10-5gauss.

Structure in the radiation of the galactic disk

1967 ◽  
Vol 31 ◽  
pp. 355-356
Author(s):  
R. D. Davies
Keyword(s):  
Magnetic Field ◽  
Galactic Disk ◽  
Galactic Magnetic Field ◽  
Measured Polarization

Observations at various frequencies between 136 and 1400 MHz indicate a considerable amount of structure in the galactic disk. This result appears consistent both with measured polarization percentages and with considerations of the strength of the galactic magnetic field.

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