Speaker
Henrik Johansson
(Saclay)
Description
In recent years it has become clear that gauge theory and gravity amplitudes
exhibit remarkable simplicity and beautiful structures. Here I will discuss one
such structure: a duality between color and kinematics in gauge theory
amplitudes. The duality implies nontrivial relations between color-ordered
partial tree amplitudes. Remarkably the duality dictates the construction of
gravity amplitudes as a double copy of gauge theory kinematic factors, clarifying
the Kawai-Lewellen-Tye relations of open and closed strings. Originally
considered as a classical (tree-level) duality, here I will present evidence that
the duality is valid at the quantum level as well.
Primary author
Henrik Johansson
(Saclay)
