Richard E. Cutkosky was a physicist, best known for the Cutkosky cutting rules in quantum field theory, which give a simple way to calculate the discontinuity of the scattering amplitude by Feynman diagrams.
Works
Other Work
Publications R. E. Cutkosky (1960), "Singularities and Discontinuities of Feynman Amplitudes", J. Math. Phys. 1: 429, Bibcode:1960JMP.....1..429C, doi:10.1063/1.1703676.
