Quantum mechanics

Curvature

Boundary (topology)

Differential equation

Eccentricity (behavior)

Classical mechanics

Physics

Mathematics

Political science

Angular momentum

Mathematical analysis

Geometry

Ordinary differential equation

Logarithm

Bound state

Action (physics)

Physical Review Letters

We compute the conservative dynamics of nonspinning binaries at fourth post-Minkowskian order in the large-eccentricity limit, including both potential and radiation-reaction tail effects. This is achieved by obtaining the scattering angle in the worldline effective field theory approach and deriving the bound radial action via analytic continuation. The associated integrals are bootstrapped to all orders in velocities through differential equations, with boundary conditions in the potential and radiation regions. The large angular momentum expansion captures all the local-in-time effects as well as the trademark logarithmic corrections for generic bound orbits. Agreement is found in the overlap with the state of the art in post-Newtonian theory.

Conservative Dynamics of Binary Systems at Fourth Post-Minkowskian Order in the Large-Eccentricity Expansion