Spin-3/2 Potentials in Backgrounds with Boundary

Details Spin-3/2 Potentials in Backgrounds with Boundary Spin-3/2 Potentials in Backgrounds with Boundary

1995-07-06

arxiv.org/abs/gr-qc/9507014v1

Int.J.Mod.Phys. D4 (1995) 735-747

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

23 pages, plain-tex

Scientific paper

10.1142/S0218271895000491

This paper studies the two-spinor form of the Rarita-Schwinger potentials subject to local boundary conditions compatible with local supersymmetry. The massless Rarita-Schwinger field equations are studied in four-real-dimensional Riemannian backgrounds with boundary. Gauge transformations on the potentials are shown to be compatible with the field equations providing the background is Ricci-flat, in agreement with previous results in the literature. However, the preservation of boundary conditions under such gauge transformations leads to a restriction of the gauge freedom. The recent construction by Penrose of secondary potentials which supplement the Rarita-Schwinger potentials is then applied. The equations for the secondary potentials, jointly with the boundary conditions, imply that the background four-geometry is further restricted to be totally flat. The analysis of other gauge transformations confirms that, in the massless case, the only admissible class of Riemannian backgrounds with boundary is totally flat.

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