Study of eccentric binaries in Horndeski theory

Abhishek Chowdhuri; Arpan Bhattacharyya

Study of eccentric binaries in Horndeski theory

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arxiv 2203.09917 v3 pith:UNLZYAV2 submitted 2022-03-18 gr-qc hep-th

Abhishek Chowdhuri , Arpan Bhattacharyya This is my paper · ORCID

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keywords binarieseccentricratecomputedecayhorndeskiorbitaltheory

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We study the orbital evolution of eccentric binary systems in Horndeski gravity. This particular theory provides a testbed to give insightful comparisons with data. We compute the rate of energy loss and the rate of change of angular momentum for the binaries by calculating the multipole moments of the radiation fields. We have used appropriate parameters for the eccentric binaries to compute the decay rates of its orbital eccentricity and semi-major axis. We then compare this decay rate with that of GR.

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Angular momentum flux through post-Newtonian order for noncircular nonspinning black-hole binaries in Einstein-Maxwell-dilaton theory
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The scalar, electromagnetic, and tensor contributions to the angular momentum flux from noncircular EMd binaries are derived through 1PN order.

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