Lecturer: Prof. Barak Kol
Affiliation: Racah Institute of Physics,
Hebrew University of Jerusalem
Abstract:
Perturbative gauge theory is currently making
fascinating fast-pace progress, known as
"scattering amplitudes". The first step in
determining Yang-Mills scattering amplitudes
is the separation of color and kinematics
leading to the definition of color-ordered sub-
amplitudes. We gain new insight into color
structures through the role of the shuffle and
split operations on the algebra of words made
of the color alphabet. Then we formulate a
novel question about the transformation of
color structures under permutations, and we
find the full answer for tree level and 1-loop.
We discuss implications for sub-amplitudes. It
is amusing to note that new insights and
results were achieved even in such a heavily
studied topic.
Additional details of the upcoming Joint Seminars
in Theoretical High Energy Physics can be found
on the following link