Spin-2 fields and helicity

Details Spin-2 fields and helicity Spin-2 fields and helicity

2011-10-14

arxiv.org/abs/1110.3288v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

9 pages

Scientific paper

By considering the irreducible representations of the Lorentz group, an analysis of the different spin-2 waves is presented. In particular, the question of the helicity is extensively discussed. It is concluded that, although from the point of view of representation theory there are no compelling reasons to choose between waves with helicity $\sigma = \pm 1$ or $\sigma = \pm 2$, consistency arguments of the ensuing field theories seem to favor waves with helicity $\sigma = \pm 1$.

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