Transverse Symmetry and Spin-3/2 Fields

Details Transverse Symmetry and Spin-3/2 Fields Transverse Symmetry and Spin-3/2 Fields

2008-03-31

arxiv.org/abs/0803.4497v1

Class.Quant.Grav.25:154009,2008

Physics

High Energy Physics

High Energy Physics - Theory

12 pages. To appear in Peyresq XII proceedings

Scientific paper

10.1088/0264-9381/25/15/154009

We study the possible covariant Lagrangians that describe the propagation of pure spin-3/2 particles. We show that, apart from the well-known Rarita-Schwinger Lagrangian, there is another possibility where the field is described by a gamma-traceless combination and that both Lagrangians yield the same physical predictions for the interaction of conserved sources. We also prove that for the case when the spin-2 field is described by a traceless field, there is no possible spin-3/2 action that makes the system supersymmetric. Nevertheless, the interaction between this field andthe spin-3/2 field may be possible.

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