Abstract
We discuss supergravity from an -matrix point of view. Kinematical constraints on helicity amplitudes determine the spin-2 and spin-3/2 Born amplitudes almost uniquely, and force Born amplitudes involving spin-5/2 fermions to vanish. Global supersymmetry is then used to determine the Born amplitudes completely. We suggest that Lorentz invariance, presence of only one (dimensional) coupling constant , and global supersymmetry lead to a unique locally supergauge-invariant theory of spin-2 and spin-3/2 particles. We draw similar conclusions for a model uniting supergravity and the Wess-Zumino scalar multiplet.
- Received 16 August 1976
DOI:https://doi.org/10.1103/PhysRevD.15.996
©1977 American Physical Society