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arXiv · hep-th/9602004

Unification of Spacetime Symmetries of Massive and Massless Particles

Y. S. Kim
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Abstract

The internal space-time symmetries of relativistic particles are dictated by Wigner's little groups. The $O(3)$-like little group for a massive particle at rest and the $E(2)$-like little group of a massless particle are two different manifestations of the same covariant little group. Likewise, the quark model and parton pictures are two different manifestations of the one covariant entity.

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Y. S. Kim. 1996-02-01. Unification of Spacetime Symmetries of Massive and Massless Particles. https://arxiv.org/abs/hep-th/9602004

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