Effective one body approach to the dynamics of two spinning black holes with next-to-leading order spin-orbit coupling

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dc.creatorDamour, Thibault
dc.creatorJaranowski, Piotr
dc.creatorSchäfer, Gerhard
dc.date2008-03-06
dc.date.accessioned2026-07-07T11:40:41Z
dc.date.available2026-07-07T11:40:41Z
dc.descriptionUsing a recent, novel Hamiltonian formulation of the gravitational interaction of spinning binaries, we extend the Effective One Body (EOB) description of the dynamics of two spinning black holes to next-to-leading order (NLO) in the spin-orbit interaction. The spin-dependent EOB Hamiltonian is constructed from four main ingredients: (i) a transformation between the ``effective'' Hamiltonian and the ``real'' one, (ii) a generalized effective Hamilton-Jacobi equation involving higher powers of the momenta, (iii) a Kerr-type effective metric (with Padé-resummed coefficients) which depends on the choice of some basic ``effective spin vector'' $\bf{S}_{\rm eff}$, and which is deformed by comparable-mass effects, and (iv) an additional effective spin-orbit interaction term involving another spin vector $\bsigma$. As a first application of the new, NLO spin-dependent EOB Hamiltonian, we compute the binding energy of circular orbits (for parallel spins) as a function of the orbital frequency, and of the spin parameters. We also study the characteristics of the last stable circular orbit: binding energy, orbital frequency, and the corresponding dimensionless spin parameter $\hat{a}_{\rm LSO}\equiv c J_{\rm LSO}/\boldsymbol(G(H_{\rm LSO}/c^2)^2\boldsymbol)$. We find that the inclusion of NLO spin-orbit terms has a significant ``moderating'' effect on the dynamical characteristics of the circular orbits for large and parallel spins.
dc.descriptionREVTeX, 22 pages, 7 figures
dc.identifierhttps://arxiv.org/abs/0803.0915
dc.identifierhttp://arxiv.org/abs/0803.0915
dc.identifierPhys.Rev.D78:024009,2008
dc.identifierdoi:10.1103/PhysRevD.78.024009
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/200327
dc.subjectGeneral Relativity and Quantum Cosmology
dc.titleEffective one body approach to the dynamics of two spinning black holes with next-to-leading order spin-orbit coupling
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