Affiliation:
1. Queen Mary University of London
Abstract
Scattering amplitudes in quantum field theories are of widespread
interest, due to a large number of theoretical and phenomenological
applications. Much is known about the possible behaviour of
amplitudes, that is independent of the details of the underlying
theory. This knowledge is often neglected in modern QFT courses, and
the aim of these notes - aimed at graduate students - is to redress
this. We review the possible singularities that amplitudes can have,
before examining the generic behaviour that can arise in the
high-energy limit. Finally, we illustrate the results using examples
from QCD and gravity.
Funder
European Commission
Science and Technology Facilities Council
Cited by
6 articles.
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