Practical application of the unitary approximation to infrared singularities
Hans Dieter Dahmen, Thomas Mannel, P. Manakos · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · 1988
The unitary approximation, which sums contributions of every order, is applied to infrared singularities. The applicability for practical calculation is demonstrated on QED processes.Received 11 April 1988DOI:https://doi.org/10.1103/PhysRevD.38.1176©1988 American Physical Society