Electron interaction with the spin angular momentum of the electromagnetic field

作者：R. F. O’Connell · 发表于：Civil War Book Review · 年份：2017 · 被引用次数：5 · 研究领域：Quantum and Classical Electrodynamics、Geophysics and Sensor Technology、Experimental and Theoretical Physics Studies

We give a simple derivation and expansion of a recently proposed new relativistic interaction between the electron and the spin angular momentum of the electromagnetic field in quantum electrodynamics (QED). Our derivation is based on the work of Moller, who pointed out that, in special relativity, a particle with spin must always have a finite extension. After generalizing Moller's classical result to include both rotation and quantum effects, we show that it leads to a new contribution to the energy, which is the special relativistic interaction term. In addition, we show that all relativistic terms involving spin terms arising from the Dirac equation may be obtained by this method.