4 papers
Recursion Relations for Classical Gravity
Poul H. Damgaard, Kwangeon Kim, Kanghoon Lee
We derive a set of recursion relations for the perturbative evaluation of the scattering of two black holes in Einstein gravity. To illustrate, we solve the equations up to third p…
Recursion for Differential Cross-Section from the Optical Theorem
Vatsal Garg, Hojin Lee, Kanghoon Lee
We present a novel framework for computing differential cross-sections in quantum field theory using the optical theorem and loop amplitudes, circumventing the traditional method o…
The Schwarzschild Black Hole from Perturbation Theory to all Orders
Poul H. Damgaard, Kanghoon Lee
Applying the quantum field theoretic perturbiner approach to Einstein gravity, we compute the metric of a Schwarzschild black hole order by order in perturbation theory. Using recu…
Binary Black Holes and Quantum Off-Shell Recursion
Kyoungho Cho, Kwangeon Kim, Kanghoon Lee
The quantum off-shell recursion provides an efficient and universal computational tool for loop-level scattering amplitudes. In this work, we present a new comprehensive computatio…