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The Foldy–Wouthuysen transformation

 

作者: John P. Costella,   Bruce H. J. McKellar,  

 

期刊: American Journal of Physics  （AIP Available online 1995）
卷期: Volume 63, issue 12  

页码: 1119-1121

 

ISSN:0002-9505

 

年代: 1995

 

DOI:10.1119/1.18017

 

出版商: American Association of Physics Teachers

 

关键词: ANTIPARTICLES;DIRAC EQUATION;FOLDY−WOUTHUYSEN TRANSFORM;HAMILTONIANS;POSITION OPERATORS;RELATIVISTIC RANGE;SPIN;WAVE EQUATIONS;WAVE FUNCTIONS

 

数据来源: AIP

 

摘要:

The Foldy–Wouthuysen transformation of the Dirac Hamiltonian is generally taught as simply a mathematical trick that allows one to obtain a two‐component theory in the low‐energy limit. It is not often emphasized that the transformed representation is the only one in which one can take a meaningfulclassicallimit, in terms of particles and antiparticles. We briefly review the history and physics of this transformation.

 

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