Dirac, Majorana and Weyl fermions

Details Dirac, Majorana and Weyl fermions Dirac, Majorana and Weyl fermions

2010-06-09

arxiv.org/abs/1006.1718v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

32 pages, LaTeX, no figure. A new section added on the 2-component formalism, and the section on "Feynman rules" has been expa

Scientific paper

This is a pedagogical article which discusses various kinds of fermion fields: Dirac, Majorana and Weyl. The definitions and motivations for introducing each kind of fields is discussed, along with the connections between them. It is pointed out that these definitions have to do with the proper Lorentz group, and not with respect to any discrete symmetry. The relationship of discrete symmetries like charge conjugation and CP, particularly important for Majorana fermions, has also been clarified.

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