Comparison of 4.5PN and 2SF gravitational energy fluxes from quasicircular compact binaries
Abstract
Recent years have seen significant advances in models of gravitational waveforms emitted by quasicircular compact binaries in two regimes: the weak-field, post-Newtonian regime, in which the gravitational wave energy flux has now been calculated to fourth-and-a-half post-Newtonian order (4.5PN) [L. Blanchet , ] and the small-mass-ratio, gravitational self-force regime, in which the flux has now been calculated to second perturbative order in the mass ratio (2SF) [N. Warburton , ]. We compare these results and find evidence of mutual consistency between the two (very distinct though both first-principle) perturbative calculations.
Fields of Study & Subjects
Pulsars and Gravitational Waves Research
High-pressure geophysics and materials
Cold Atom Physics and Bose-Einstein Condensates
Publication details
- Journal / source
- Physical review. D/Physical review. D.
- Publisher
- American Physical Society (APS)
- Volume
- 113
- Issue
- 8
- Publication date
- 25 February 2026
- Language
- EN