Physics @ Berkeley
Events in Physics
Title: String Theory 290Z    (Seminar)
Start Date: 10/01/2013
Time: 3:30 pm
Location: 402 Classroom 4th floor Old LeConte Hall, Campus
Speaker: Arthur Lipstein
Affiliation: Caltech
Contact Person: LaVern Navarro   (510) 642-2304

"From dlogs to dilogs"

In this talk, I will describe a new form of hidden simplicity in the planar scattering amplitudes of N=4 super-Yang-Mills theory, notably that the loop integrands can be expressed in dlog form. I will explain how this form arises geometrically from computing the scattering amplitudes using a holomorphic Wilson loop in twistor space. I will also describe a systematic method for evaluating such integrals and use it to obtain a new formula for the 1-loop MHV amplitude. These techniques can be extended to higher loop amplitudes and may lead to a simple and efficient method for computing scattering amplitudes more generally.