Group Theoretical Interpretation of the CPT-theorem

Details Group Theoretical Interpretation of the CPT-theorem Group Theoretical Interpretation of the CPT-theorem

2003-06-12

arxiv.org/abs/math-ph/0306034v2

"Mathematical Physics Research at the Cutting Edge" (Ed. C. V. Benton), pp. 51-100 (Nova Science Publishers, New York, 2004)

Physics

Mathematical Physics

45 pages, LaTeX2e

Scientific paper

An algebraic description of basic discrete symmetries (space inversion P, time reversal T, charge conjugation C and their combinations PT, CP, CT, CPT) is studied. Discrete subgroups {1,P,T,PT} of orthogonal groups of multidimensional spaces over the fields of real and complex numbers are considered in terms of fundamental automorphisms of Clifford algebras. The fundamental automorphisms form a finite group of order 4. The charge conjugation is represented by a pseudoautomorphism of the Clifford algebra. Such a description allows one to extend the automorphism group. It is shown that an extended automorphism group (CPT-group) forms a finite group of order 8. The group structure and isomorphisms between the extended automorphism groups and finite groups are studied in detail. It is proved that there exist 64 different realizations of CPT-group. An extension of universal coverings (Clifford-Lipschitz groups) of the orthogonal groups is given in terms of CPT-structures which include well-known Shirokov-Dabrowski PT-structures as a particular case.

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