The C-matrix and the reality classification of the representations of the homogeneous Lorentz group. I. Irreducible representations of SO(3,1)

Rao, A. V. G. and Narahari, B. S. and Rao, K. N. S. (1995) The C-matrix and the reality classification of the representations of the homogeneous Lorentz group. I. Irreducible representations of SO(3,1). Journal of Physics A: Mathematical and General, 28 (4). pp. 957-966.

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Abstract

A basis-independent criterion for the classification of irreducible group representations, into potentially-real, pseudo-real and essentially-complex representations, is given for an arbitrary group which may also possess infinite-dimensional representations. These considerations are applied, in particular, to the finite- and infinite-dimensional representations D(j(0), c) of the orthochronous proper Lorentz group SO(3, 1) and it is shown that the irreps which are neither unitary nor pseudo-unitary are essentially-complex. Further, among the unitary and pseudo-unitary irreps of SO(3, 1), those irreps with a half-odd-integer j(0) are shown to be pseudo-real, while the others with an integer j(0) (including zero) are potentially-real.

Item Type: Article
Subjects: D Physical Science > Physics
Divisions: Department of > Physics
Depositing User: Users 23 not found.
Date Deposited: 19 May 2021 08:09
Last Modified: 03 Mar 2023 06:20
URI: http://eprints.uni-mysore.ac.in/id/eprint/16514

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