Reducing the two-body problem in scalar-tensor theories to the motion of a test particle : a scalar-tensor effective-one-body approach
| Autor: | Félix-Louis Julié |
|---|---|
| Přispěvatelé: | AstroParticule et Cosmologie (APC (UMR_7164)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), AstroParticule et Cosmologie ( APC - UMR 7164 ), Centre National de la Recherche Scientifique ( CNRS ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Observatoire de Paris-Université Paris Diderot - Paris 7 ( UPD7 ) -Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Physics
010308 nuclear & particles physics General relativity FOS: Physical sciences Strong field General Relativity and Quantum Cosmology (gr-qc) 16. Peace & justice Two-body problem 01 natural sciences General Relativity and Quantum Cosmology [ PHYS.GRQC ] Physics [physics]/General Relativity and Quantum Cosmology [gr-qc] Massless particle symbols.namesake Innermost stable circular orbit Classical mechanics 0103 physical sciences symbols [PHYS.GRQC]Physics [physics]/General Relativity and Quantum Cosmology [gr-qc] Test particle Resummation 010306 general physics Hamiltonian (quantum mechanics) |
| Zdroj: | Phys.Rev.D Phys.Rev.D, 2018, 97 (2), pp.024047. ⟨10.1103/PhysRevD.97.024047⟩ Physical Review D Physical Review D, American Physical Society, 2018, 97 (2), pp.024047. ⟨10.1103/PhysRevD.97.024047⟩ Phys.Rev.D, 2018, 97 (2), pp.024047. 〈10.1103/PhysRevD.97.024047〉 |
| ISSN: | 2470-0010 1550-7998 1550-2368 |
| DOI: | 10.1103/PhysRevD.97.024047⟩ |
| Popis: | International audience; Starting from the second post-Keplerian (2PK) Hamiltonian describing the conservative part of the two-body dynamics in massless scalar-tensor (ST) theories, we build an effective-one-body (EOB) Hamiltonian which is a ν deformation (where ν=0 is the test mass limit) of the analytically known ST Hamiltonian of a test particle. This ST-EOB Hamiltonian leads to a simple (yet canonically equivalent) formulation of the conservative 2PK two-body problem, but also defines a resummation of the dynamics which is well-suited to ST regimes that depart strongly from general relativity (GR) and which may provide information on the strong field dynamics; in particular, the ST innermost stable circular orbit location and associated orbital frequency. Results will be compared and contrasted with those deduced from the ST-deformation of the (5PN) GR-EOB Hamiltonian previously obtained in [Phys. Rev. D 95, 124054 (2017)PRVDAQ2470-001010.1103/PhysRevD.95.124054]. |
| Databáze: | OpenAIRE |
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