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- Title
Testing massive-field modifications of gravity via gravitational waves.
- Abstract
The direct detection of gravitational waves now provides a new channel for testing gravity theories. Despite that the parametrized post-Einsteinian framework is a powerful tool to quantitatively investigate the effects of modifications to gravity theory, the gravitational waveform in this framework is still extendable. One such extension is to take into account the gradual activation of dipole radiation due to massive fields, which are still only very weakly constrained if their mass $m$ is greater than $10^{-16}$ $\,$ eV from pulsar observations. Ground-based gravitational-wave detectors (LIGO, Virgo, and KAGRA) are sensitive to this activation in the mass range $10^{-14}$ $\,$ eV $\lesssim m \lesssim 10^{-13}$ $\,$ eV. Hence, we discuss a dedicated test for dipole radiation due to a massive field using the LIGO/Virgo collaboration's open data. In addition, assuming Einstein dilaton Gauss Bonnet (EdGB) type coupling, we combine the results of the analysis of binary black hole events to obtain 90% confidence level constraints on the coupling parameter $\alpha_{\rm EdGB}$ as $\sqrt{\alpha_{\rm EdGB}} \lesssim 2.47$ $\,$ km for any mass less than $6 \times 10^{-14}$ $\,$ eV for the first time, including $\sqrt{\alpha_{\rm EdGB}} \lesssim 1.85$ $\,$ km in the massless limit.
- Subjects
GRAVITATIONAL waves; PULSAR detection; GENERAL relativity (Physics); NEUTRON stars; FLUX (Energy)
- Publication
Progress of Theoretical & Experimental Physics: PTEP, 2020, Vol 2020, Issue 10, p1
- ISSN
2050-3911
- Publication type
Article
- DOI
10.1093/ptep/ptz103