paper

Gravitational radiation from inspiralling compact binaries to NLO in the Effective Field Theory approach

arXiv:2406.03457 · doi:10.1103/PhysRevD.110.044046

Abstract

Within the context of the Effective Field Theory (EFT) framework to gravitational dynamics, we compute the Hamiltonian, source quadrupole moment, and gravitational-wave energy flux for (non-spinning) inspiralling compact binaries at next-to-next-to-next-to leading order (NLO) in the Post-Newtonian (PN) expansion. We use the recently developed -dimensional multipole-expanded effective theory, and explicitly perform the matching to the (pseudo-) stress-energy tensor. The calculation involves Feynman integrals up to three- (conservative) and two-loop (radiative) orders, evaluated within dimensional regularization. Our (ambiguity-free) results confirm (for the first time) the value of the gravitational-wave flux for quasi-circular orbits at 3PN order, while paving the way forward to the inclusion of spin effects as well as higher order computations.

18 pages, 9 figures, 1 computer-readable ancillary file. v2: typos corrected, ancillary file updated, published version

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