Aldrovandi, R. [UNESP]Novaes, Sérgio Ferraz [UNESP]Spehler, D. [UNESP]2014-05-272014-05-271994-04-01General Relativity and Gravitation, v. 26, n. 4, p. 409-425, 1994.0001-77011572-9532http://hdl.handle.net/11449/64470The great simplicity attained by the Weyl-van der Waerden spinor technique in the evaluation of helicity invariant amplitudes is shown to apply in the cumbersome calculations within the framework of linearized gravitation. Once the graviton couplings to spin-0, 1/2, 1, and 3/2 particles are given, we exhibit the reach of this method by evaluating, as an example, the helicity amplitudes for the process electron + positron → photon + graviton in a very straightforward way. © 1994 Plenum Publishing Corporation.409-425engArtigo10.1007/BF02105230WOS:A1994NE51600005Acesso restrito2-s2.0-21344492954