Very Simple Proof of the Causal Propagation of Gravity in Vacuum

Miguel Á. G. Bonilla; José M. M. Senovilla

doi:10.1103/PhysRevLett.78.783

Very Simple Proof of the Causal Propagation of Gravity in Vacuum

Miguel Á. G. Bonilla and José M. M. Senovilla

Phys. Rev. Lett. 78, 783 – Published 3 February 1997

Abstract

In this Letter we present a new property of the Bel-Robinson tensor which allows us to give a very simple proof of the causal propagation of gravity in vacuum and that, moreover, provides an invariant characterization for Petrov type $N$ space-times.