3 papers
hep-th2024
Gravitational lensing in a plasma from worldlines
Francesco Comberiati, Leonardo de la Cruz
We study the deflection of light rays in a cold, non-magnetized plasma using the worldline framework. Starting from Synge's Hamiltonian formalism, we construct a position-space act…
hep-th2024
Finite Integrals from Feynman Polytopes
Leonardo de la Cruz, David A. Kosower, Pavel P. Novichkov
We investigate a geometric approach to determining the complete set of numerators giving rise to finite Feynman integrals. Our approach proceeds graph by graph, and makes use of th…
hep-th2020
Classical Yang-Mills observables from amplitudes
Leonardo de la Cruz, Ben Maybee, Donal O'Connell +1
The double copy suggests that the basis of the dynamics of general relativity is Yang-Mills theory. Motivated by the importance of the relativistic two-body problem, we study the c…