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Angular Momentum Flux in Scalar-Tensor Theories up to 1.5 post-Newtonian Order

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arxiv 2407.10908 v1 pith:T4ZON3FQ submitted 2024-07-15 gr-qc

Angular Momentum Flux in Scalar-Tensor Theories up to 1.5 post-Newtonian Order

classification gr-qc
keywords scalar-tensortheoriesorderangulareffectsfluxmomentumcompute
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We compute the angular momentum flux from a non-circular nonspinning binary system of compact objects in massless scalar-tensor theories up to one and a half post-Newtonian (1.5PN) order using multipole moments. The angular momentum flux in scalar-tensor theories involves both a tensorial and a scalar contribution which can be further decomposed as instantaneous, tail and non-linear memory effects up to 1.5PN order. We compute the explicit expressions of tail effects using the Fourier decomposition of tensorial and scalar multipole moments, and non-linear memory effects using the Newtonian order quasi-Keplerian representation of elliptic orbits in scalar-tensor theories. This work is important to construct the radiation-reaction force and hence the waveform templates for eccentric binaries in scalar-tensor theories of gravity.

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Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Angular momentum flux through post-Newtonian order for noncircular nonspinning black-hole binaries in Einstein-Maxwell-dilaton theory

    gr-qc 2026-07 conditional novelty 6.0

    The scalar, electromagnetic, and tensor contributions to the angular momentum flux from noncircular EMd binaries are derived through 1PN order.