Green function for a charged spin-½ particle with anomalous magnetic moment in a plane-wave external electromagnetic field

1999 ◽  
Vol 32 (37) ◽  
pp. 6605-6612 ◽  
Author(s):  
Arvind Narayan Vaidya ◽  
Pedro Barbosa da Silva Filho
Keyword(s):  
Electromagnetic Field ◽  
Green Function ◽  
Plane Wave ◽  
Magnetic Moment ◽  
Anomalous Magnetic Moment ◽  
External Electromagnetic Field ◽  
Spin Particle

The Electromagnetic Interactions

2021 ◽  
pp. 329-334
Author(s):  
J. Iliopoulos ◽  
T.N. Tomaras
Keyword(s):  
Electromagnetic Field ◽  
Magnetic Moment ◽  
Anomalous Magnetic Moment ◽  
Quantum Electrodynamics ◽  
Form Factors ◽  
External Electromagnetic Field ◽  
Explicit Calculation ◽  
Loop Order ◽  
Electromagnetic Interactions ◽  
Infrared Divergences

We briefly review the birth of renormalisation theory at the 1947 Shelter Island conference. We study the particular case of quantum electrodynamics in the example of an electron scattered by an external electromagnetic field. We give the general form of the amplitude in terms of form factors. At one loop the amplitude has both ultraviolet and infrared divergences. We show how to absorb the ultraviolet divergences by means of counterterms whose values are determined by the renormalisation conditions. We also show that at one loop order the electron anomalous magnetic moment is free of divergences, ultraviolet as well as infrared, and present its explicit calculation.

Photomagnetic disintegration and magnetic moment of the deuteron in the meson theory

1940 ◽  
Vol 36 (3) ◽  
pp. 351-362 ◽  
Author(s):  
S. T. Ma
Keyword(s):  
Electromagnetic Field ◽  
Magnetic Dipole ◽  
Cross Section ◽  
Magnetic Moment ◽  
Dipole Moments ◽  
External Electromagnetic Field ◽  
Nuclear System ◽  
Multipole Moments ◽  
Early Stages ◽  
Meson Theory

The interaction between an external electromagnetic field and a nuclear system can be expressed in terms of the multipole moments. The electric quadripole and the magnetic dipole moments of the deuteron have been calculated, taking into account the exchange forces as given by the meson theory. The cross-section of the photomagnetic effect of the deuteron has been calculated.This work was carried out under the guidance of Dr Heitler and Dr Fröhlich. The writer wishes to express his sincerest thanks to them for suggesting the problem and many valuable comments. The writer is also indebted to Dr Kahn for discussions during the early stages of this work.

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