Elementary particles in a curved space. II
- 15 July 1974
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 10 (2), 589-598
- https://doi.org/10.1103/physrevd.10.589
Abstract
This is an attempt to develop conventional, contemporary, elementary-particle physics in a Riemannian space of constant curvature. We study the global structure of the 3 + 2 de Sitter space, which we take to mean the covering space of the hyperboloid in a five-dimensional Minkowski space. This space is not periodic in time. A causal structure is shown to exist and the commutation relations between free fields are shown to be causal. Elementary massive particles are associated with a class of irreducible representations of the universal covering group of SO(3, 2) for which the Hamiltonian has a discrete spectrum with a lower (positive) bound. A detailed study is made of the wave functions in "momentum space" and in configuration space. Free quantum fields are introduced with the help of a discrete set of creation and destruction operators and the commutator [] is calculated. An appendix describes what we think is an interesting way to realize irreducible representations of the "discrete series."
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