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  • Letter
  • Open Access

Effective-one-body modeling for generic compact binaries with arbitrary orbits

Simone Albanesi1,2, Rossella Gamba3,4, Sebastiano Bernuzzi1, Joan Fontbuté1,5, Alejandra Gonzalez1,6, and Alessandro Nagar2,7

Phys. Rev. D 112, L121503 – Published 15 December, 2025

DOI: https://doi.org/10.1103/3snf-w1x7

Abstract

We present the first unified model for the general relativistic dynamics and gravitational radiation of generic compact binaries. TEOBResumS-Dalí is a model based on the effective-one-body framework incorporating tidal interactions, generic spins, multipolar radiation reaction/waveform, and numerical relativity information. It allows the computation of gravitational waves and other dynamical gauge invariants from generic binaries (black holes, neutron stars, and neutron star–black hole binaries) evolving along arbitrary orbits (quasicircular, eccentric, and nonplanar) through merger and including scattering. The performances of TEOBResumS-Dalí in the strong-field regime are showcased by comparisons with a large sample of 1395 high-accuracy numerical relativity simulations. TEOBResumS-Dalí allows the computation of faithful waveforms for gravitational wave astronomy, providing at the same time an understanding and a prediction of the strong-field dynamics.

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