Signals for Lorentz violation in gravitational waves

Mewes, Matthew

doi:10.1103/physrevd.99.104062

Cited by 82 publications

(91 citation statements)

References 155 publications

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“…The observation of gravitational waves from a binary neutron star merger [21][22][23], as well as from binary black hole mergers [24][25][26], has opened up novel observational opportunities in this area, cf. [27,28], and [29,30], respectively. Yet, most experimental constraints in this field come from the nonobservation of Lorentz-symmetry violation in the matter sector, see, e.g., [20, and references therein, and [54] for a summary of experimental bounds.…”

Section: Introductionmentioning

confidence: 99%

“…Yet, most experimental constraints in this field come from the nonobservation of Lorentz-symmetry violation in the matter sector, see, e.g., [20, and references therein, and [54] for a summary of experimental bounds. For searches of Lorentz-symmetry violations in the pure gravitational sector, see, e.g., [28,55,56]. In fact, we expect that Lorentz-invariance violation (LIV) cannot occur just in the matter or the gravitational sector without also percolating into the respective other sector.…”

Section: Introductionmentioning

confidence: 99%

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Lorentz invariance violations in the interplay of quantum gravity with matter

Eichhorn

Platania²,

Schiffer³

2020

Phys. Rev. D

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We explore the interplay of matter with quantum gravity with a preferred frame to highlight that the matter sector cannot be protected from the symmetry-breaking effects in the gravitational sector. Focusing on Abelian gauge fields, we show that quantum gravitational radiative corrections induce Lorentzinvariance-violating couplings for the Abelian gauge field. In particular, we discuss how such a mechanism could result in the possibility to translate observational constraints on Lorentz violation in the matter sector into strong constraints on the Lorentz-violating gravitational couplings.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Lorentz invariance violations in the interplay of quantum gravity with matter

Eichhorn

Platania²,

Schiffer³

2020

Phys. Rev. D

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“…Recently, the constraints on Lorentz violating gravity from the gravitational waves were investigated in Refs. [75][76][77][78] (see also [79]). Comparing with the previous studies (e.g.)…”

Section: Introductionmentioning

confidence: 99%

Propagation of gravitational waves in a cosmological background

Gao

Hong

2020

Phys. Rev. D

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We investigate the propagation of the gravitational waves in a cosmological background. Based on the framework of spatially covariant gravity, we derive the general quadratic action for the gravitational waves. The spatial derivatives of the extrinsic curvature and the parity-violating terms are systematically introduced. Special attention is paid to the propagation speed of the gravitational waves. We find that it is possible to make the two polarization modes propagate in the same speed, which may differ from that of the light, in the presence of parity-violating terms in the action. In particular, we identify a large class of spatially covariant gravity theories with parity violation, in which both the polarization modes propagate in the speed of light. Our results imply that there are more possibilities in the framework of spatially covariant gravity in light of the propagation speed of the gravitational waves. *

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“…When CPT invariance was deviated, if any, GWs with lefthanded and right-handed circular polarizations could gain a slight difference in propagating speeds [23,24]. As a consequence, the birefringence is induced and there is a rotation of plus (+) and cross (×) modes [25,26]. The birefringent effect depends on the GW frequency and can be accumulated along the trajectory of GWs, which are emitted from compact binary coalescences at cosmological distances.…”

Section: Introductionmentioning

confidence: 99%

Tests of CPT invariance in gravitational waves with LIGO-Virgo catalog GWTC-1

Wang

Zhao

2020

Eur. Phys. J. C

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A discovery of gravitational waves from binary black holes raises a possibility that measurements of them can provide strict tests of CPT invariance in gravitational waves. When CPT violation exists, if any, gravitational waves with different circular polarizations could gain a slight difference in propagating speeds. Hence, the birefringence of gravitational waves is induced and there should be a rotation of plus and cross modes. For CPT-violating dispersion relation $${\omega ^{2}=k^{2}}$$ ω 2 = k 2 $${\pm 2\zeta k^{3}}$$ ± 2 ζ k 3 , where a sign $${\pm }$$ ± denotes different circular polarizations, we find no substantial deviations from CPT invariance in gravitational waves by analyzing a compilation of ten signals of binary black holes in the LIGO-Virgo catalog GWTC-1. We obtain a strict constraint on the CPT-violating parameter, i.e., $$\zeta =0.14^{+0.22}_{-0.31}\times 10^{-15}\,\text {m}$$ ζ = 0 . 14 - 0.31 + 0.22 × 10 - 15 m , which is around two orders of magnitude better than the existing one. Therefore, this study stands for the up-to-date strictest tests of CPT invariance in gravitational waves.

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Signals for Lorentz violation in gravitational waves

Cited by 82 publications

References 155 publications

Lorentz invariance violations in the interplay of quantum gravity with matter

Lorentz invariance violations in the interplay of quantum gravity with matter

Propagation of gravitational waves in a cosmological background

Tests of CPT invariance in gravitational waves with LIGO-Virgo catalog GWTC-1

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