Speaker
Qu Cao
(Zhejiang University)
Description
In this talk, I will briefly review the story of scattering amplitudes, mostly the color-ordering amplitudes. Based on the open-string topology- the real Riemann surface, a stringy integral has been proposed to unify the scalar, pion, and gluon amplitudes. The more interesting thing is now I propose a new stringy integral for the color-ordering form factor, which is inspired by the open & closed string disk amplitudes. The stringy form factor reduces to the form factor in the field theory, manifests the hidden properties of the field-theory form factors, and uncovers more non-trivial relations between form factors and scattering amplitudes.
Author
Qu Cao
(Zhejiang University)
