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Dirac Formalism for Arbitrary Spin in S ‐Matrix Theory
Author(s) -
Enflo B. O.,
Laurent B. E.
Publication year - 1968
Publication title -
fortschritte der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.469
H-Index - 71
eISSN - 1521-3978
pISSN - 0015-8208
DOI - 10.1002/prop.19680160702
Subject(s) - unitarity , formalism (music) , physics , parity (physics) , lorentz group , mathematical physics , lorentz transformation , theoretical physics , quantum mechanics , s matrix , cpt symmetry , lorentz covariance , art , scattering , visual arts , musical
The S ‐matrix formalism is built up from the beginning, for particles with and without mass, through systematic use of the representation D s,0 D 0,s of the homogeneous Lorentz group. Only concepts referring to space and time are considered. Within the framework of the formalism, the close interdependence between CPT, spin and statistics, crossing symmetry and unitarity is explicitly emphasized. The concepts of intrinsic parity, spin‐flip and particle conjugation are re‐examined. A comparison is made with conventional field‐theoretic formalism.