Group-Theoretical Construction of Dual Amplitudes
L. Clavelli, Pierre Ramond · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · 1971
We present general group-theoretical requirements for the construction of factorizable, dual $N$-point functions. Dual amplitudes for the scattering of arbitrary numbers of spinning particles are built as an example of this approach.