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General Relativity and Quantum Cosmology

arXiv:2108.02974 (gr-qc)
[Submitted on 6 Aug 2021 (v1), last revised 28 Aug 2021 (this version, v2)]

Title:New limits on the Lorentz/CPT symmetry through fifty gravitational-wave events

Authors:Ziming Wang, Lijing Shao, Chang Liu
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Abstract:Lorentz invariance plays a fundamental role in modern physics. However, tiny violations of the Lorentz invariance may arise in some candidate quantum gravity theories. Prominent signatures of the gravitational Lorentz invariance violation (gLIV) include anisotropy, dispersion, and birefringence in the dispersion relation of gravitational waves (GWs). Using a total of 50 GW events in the GW transient catalogs GWTC-1 and GWTC-2, we perform an analysis on the anisotropic birefringence phenomenon. The use of multiple events allows us to completely break the degeneracy among gLIV coefficients and globally constrain the coefficient space. Compared to previous results at mass dimensions 5 and 6 for the Lorentz-violating operators, we tighten the global limits of 34 coefficients by factors ranging from $2$ to $7$.
Comments: 7 pages, 2 figures, 2 tables; accepted by ApJ
Subjects: General Relativity and Quantum Cosmology (gr-qc); High Energy Astrophysical Phenomena (astro-ph.HE); High Energy Physics - Phenomenology (hep-ph)
Cite as: arXiv:2108.02974 [gr-qc]
  (or arXiv:2108.02974v2 [gr-qc] for this version)
  https://doi.org/10.48550/arXiv.2108.02974
Journal reference: ApJ 921 (2021) 158
Related DOI: https://doi.org/10.3847/1538-4357/ac223c

Submission history

From: Lijing Shao [view email]
[v1] Fri, 6 Aug 2021 06:59:26 UTC (574 KB)
[v2] Sat, 28 Aug 2021 06:16:18 UTC (574 KB)
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