We present an application of the Weyl-van der Waerden spinor calculus to the computation of the polarized graviton-scalar and graviton-fermion Compton scattering amplitudes. We demonstrate that with the minimal gauge choice the number of contributing diagrams are minimal; hence, the amount of work is reduced considerably in the calculation. We allow the scalar and fermion fields to be massive, and the technique is not only applicable in the high-energy limit.
關聯:
Physical Review D (Particles and Fields) 47(4), pp.1692-1698
