Gauge choice in Witten's energy expression

Witten's equation can be interpreted as a gauge fixing condition for classical supergravity. We rigorously prove the existence of asymptotically constant solutions of the more general gauge condition for almost all endomorphismsA of the spin bundle. Each gives an expression for the gravitational energy similar to Witten's. These include the choice , which yields the particularly elegant energy expression first noticed by Deser.Partially supported by N. S. F. Grant MCS-82-02018 at Harvard University