Hamiltonian normal forms for the post-Newtonian binary problem

Le résumé fourni par la source

We revisit the dynamics of the post-Newtonian (PN) two-body problem for two inspiraling compact bodies. Starting from a matter-only point-mass Hamiltonian, we present an adapted framework based on the Lie series approach, enabling the derivation of complete perturbative solutions within the conservative sector. Our framework supports both circular and eccentric orbits and is applicable to any perturbation respecting rotational invariance and time independence. In the context of the Arnowitt-Deser-Misner canonical formalism, this includes up to at least 3PN order and local terms beyond. We provide an example application at 2PN order, recovering classical periapsis advance and orbital period corrections, alongside the full orbital evolution in time coordinates. We discuss eventual extensions to spinning and time-dependent systems.

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