1. Prescriptive Unitarity and Rigidity at Two Loops Open Access Author: Kalyanapuram, Nikhil Title: Prescriptive Unitarity and Rigidity at Two Loops Graduate Program: Physics Keywords: scattering amplitudesquantum field theorymathematical physicselliptic functions File: Download Prescriptive_Unitarity_and_Rigidity_at_Two_Loops-4.pdf Committee Members: Nitin Samarth, Program Head/ChairRadu Roiban, Major Field MemberNigel Higson, Outside Unit & Field MemberJacob Bourjaily, Chair & Dissertation AdvisorAnna Stasto, Major Field Member