Analytic properties of npoint loops in perturbation theory

Singularities and Discontinuities of Feynman Amplitudes

R. E. Cutkosky · Journal of Mathematical Physics · 1960 · 1.2K citations

Natural Sciences, Physics, Mathematical Physics +11

On analytic properties of vertex parts in quantum field theory

L.D. LANDAU · Nuclear Physics · 1959 · 763 citations

Natural Sciences, Mathematics, Physics +10

Analytic Properties of Transition Amplitudes in Perturbation Theory

S. Mandelstam · Physical Review · 1959 · 340 citations

Natural Sciences, Physics, Mathematical Physics +6

Radiative Corrections to Compton Scattering

L. M. Brown, Richard P. Feynman · Physical Review · 1952 · 313 citations

Natural Sciences, Physics, Nuclear Physics +10

Parametric representations of general Green’s functions

Y. Nambu · Il Nuovo Cimento · 1957 · 104 citations

Natural Sciences, Chemistry, Quantum Mechanics +9