Speed of gravitational waves and the fate of scalar-tensor gravity

By D. Bettoni, J. Ezquiaga, Kurt Hinterbichler, Miguel Zumalac'arregui Nordita, Madrid Ift, Perimeter Institute, Uc Berkeley. 2016

163 citations recorded by the source corpus.

The direct detection of gravitational waves (GWs) is an invaluable new tool to probe gravity and the nature of cosmic acceleration. A large class of scalar-tensor theories predicts that GWs propaga ...

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics, Oceanography

View Paper: https://www.semanticscholar.org/paper/218d6fb864addcc42cd1af627337738b7b543f53

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Citations in the corpus

A systematic approach to generalisations of General Relativity and their cosmological implications (2018, unknown): “For an arbitrary background the effective metric has the covariant form Gμν = Cgμν +DΠμΠν +EΠμν [283].”
Galileon gravity in light of ISW, CMB, BAO and H0 data (2017, background): “In Quartic and Quintic Galileons the scalar field induces an anomalous speed in the gravitational wave propagation [114–116]: the observation of gravitational wave events with electromagnetic counterparts would lead to a phenomenally precise test of the model using Earth or space-based detectors [11”
Gravitational wave decay into dark energy (2018, background): “This implies that in general the speed of GWs may be different from the speed of light [3, 4].”
Stellar structure models in modified theories of gravity: Lessons and challenges (2019, methodology): “A family of models including a combination of quartic Horndeski and beyond Horndeski terms satisfying cGW = c (see [276] for an elaborate discussion on this point) was considered by Chagoya and Tasinato [277].”
Testing modified gravity at cosmological distances with LISA standard sirens (2019, unknown): “This test can constrain the graviton mass [42, 43] as well as the propagation speed [44, 45].”
Horndeski theory and beyond: a review (2019, background): “lving only the metric were explored in [185] under the name of “beyond Lovelock gravity.” 4.2. After GW170817 Measuring the speed of gravitational waves cGW can be a test for modiﬁed gravity theories [186, 187, 188, 189]. Indeed, the nearly simultaneous detection of gravitational waves GW170817 and ”
Dark Energy in Light of Multi-Messenger Gravitational-Wave Astronomy (2018, background): “At small scales and for arbitrary backgrounds, the action is determined by the effective metric G over which GWs propagate (Bettoni et al., 2017)”
hi_class: Horndeski in the Cosmic Linear Anisotropy Solving System (2016, background): “An observation of an indisputable electromagnetic counterpart to a gravitational wave event at cosmological distances would put a constraint on this parameter tight enough to render the remaining uncertainty irrelevant for structure formation [62, 63].”