2 papers
hep-th2023
Prescriptive Unitarity and Rigidity at Two Loops
Nikhil Kalyanapuram
We elaborate upon and consolidate various recent developments focusing on the triality of questions offered by issues of basis building, unitarity and non-polylogarithmicity in qua…
hep-th2022
The Stratification of Rigidity
Jacob L. Bourjaily, Nikhil Kalyanapuram
We show that a master integrand basis exists for all planar, two-loop amplitudes in massless four-dimensional theories which is fully stratified by rigidity -- with each integrand…