CPT groups for spinor field in de Sitter space

Details CPT groups for spinor field in de Sitter space CPT groups for spinor field in de Sitter space

2005-08-25

arxiv.org/abs/math-ph/0508050v2

Phys.Lett. B631 (2005) 187-191

Physics

Mathematical Physics

7 pages

Scientific paper

10.1016/j.physletb.2005.10.008

A group structure of the discrete transformations (parity, time reversal and charge conjugation) for spinor field in de Sitter space are studied in terms of extraspecial finite groups. Two $CPT$ groups are introduced, the first group from an analysis of the de Sitter-Dirac wave equation for spinor field, and the second group from a purely algebraic approach based on the automorphism set of Clifford algebras. It is shown that both groups are isomorphic to each other.

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