Comparison between self-force and post-Newtonian dynamics: Beyond circular orbits

Sarp Akcay, Alexandre Le Tiec, Leor Barack, Norichika Sago, Niels Warburton

Research output: Contribution to journalArticlepeer-review

47 Citations (Scopus)


The gravitational self-force (GSF) and post-Newtonian (PN) schemes are complementary approximation methods for modeling the dynamics of compact binary systems. Comparison of their results in an overlapping domain of validity provides a crucial test for both methods and can be used to enhance their accuracy, e.g. via the determination of previously unknown PN parameters. Here, for the first time, we extend such comparisons to noncircular orbits - specifically, to a system of two nonspinning objects in a bound (eccentric) orbit. To enable the comparison we use a certain orbital-averaged quantity U

Original languageEnglish
Article number124014
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Issue number12
Publication statusPublished - Jun 3 2015

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)


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