Particles with Zero Mass and Particles with "Small" Mass
- 15 March 1963
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 129 (6) , 2816-2817
- https://doi.org/10.1103/physrev.129.2816
Abstract
The irreducible representations of the inhomogeneous Lorentz group which describe, respectively, particles with and without mass are qualitatively different. Nevertheless, the zero-mass representations can be obtained from the representation with mass by letting the mass go to zero. Particles of sufficiently small mass or sufficiently high energy behave like particles of zero mass.Keywords
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