Michael Saavedra

collaborators

3 papers

hep-th2026

Analytic structure of the high-energy gravitational amplitude: multi-H diagrams and classical 5PM logarithms

Francesco Alessio, Vittorio Del Duca, Riccardo Gonzo +3

We investigate the high-energy, small-angle limit of two-body gravitational scattering. Using power counting arguments and dispersion relations in an effective field theory for the…

hep-th2026

The Classical Gravitational Impulse at High Energies

Michael Saavedra

We compute the gravitational impulse for two classical massive scalars in the ultrarelativistic limit to all orders in Newton's constant $G_{N}$ at fixed $G_{N} s / mb$ to $O (m^{4} / s^{2})$ .…

hep-th2026

A Systematic Lagrangian Formulation for Quantum and Classical Gravity at High Energies

Ira Z. Rothstein, Michael Saavedra

We derive a systematic Lagrangian approach for quantum gravity in the super-Planckian limit where $s ≫ M_{pl}^{2} ≫ t$ . The action can be used to calculate to arbitrary accuracy in…