# Testing Brans-Dicke gravity with screening by scalar gravitational wave memory

@article{Koyama2020TestingBG, title={Testing Brans-Dicke gravity with screening by scalar gravitational wave memory}, author={Kazuya Koyama}, journal={Physical Review D}, year={2020}, volume={102}, pages={021502} }

The Brans-Dicke theory of gravity is one of the oldest ideas to extend general relativity by introducing a non-minimal coupling between the scalar field and gravity. The Solar System tests put tight constraints on the theory. In order to evade these constraints, various screening mechanisms have been proposed. These screening mechanisms allow the scalar field to couple to matter as strongly as gravity in low density environments while suppressing it in the Solar System. The Vainshtein mechanism…

## 11 Citations

Anisotropic stars in Brans-Dicke gravity

- Physics
- 2021

Abstract In the present work we show application of Brans-Dicke theory of gravitation, as an alternative to Einstein’s general relativity, in modeling anisotropic compact stellar objects. To make the…

Difficulties in reconciling non-negligible differences between the local and cosmological values of the gravitational coupling in extended Brans-Dicke theories

- PhysicsJournal of Cosmology and Astroparticle Physics
- 2021

Recent studies by Solà Peracaula, Gómez-Valent, de Cruz Pérez and Moreno-Pulido (2019,2020) have pointed out the intriguing possibility that Brans-Dicke cosmology with constant vacuum energy density…

Framework for describing perturbations to the cosmic microwave background from a gravitational wave burst with memory

- Physics
- 2021

Gravitational wave bursts with memory (BWMs) can generate measurable, long-lived frequency shifts and permanent angular deflections in distant sources of light. These perturbations vary across the…

Gravitational breathing memory and dual symmetries

- Physics
- 2021

Brans-Dicke theory contains an additional propagating mode which causes homogeneous expansion and contraction of test bodies in transverse directions. This “breathing” mode is associated with novel…

Gravitational memory effects in Chern-Simons modified gravity

- Physics
- 2021

The gravitational memory effects of Chern-Simons modified gravity are considered in the asymptotically flat spacetime. If the Chern-Simons scalar does not directly couple with the ordinary matter…

Gravitational-wave memory effects in Brans-Dicke theory: Waveforms and effects in the post-Newtonian approximation

- PhysicsPhysical Review D
- 2021

Gravitational-wave (GW) memory effects produce permanent shifts in the GW strain and its time integrals after the passage of a burst of GWs. Their presence is closely tied to the symmetries of…

Kundt geometries and memory effects in the Brans–Dicke theory of gravity

- Physics
- 2021

Memory effects are studied in the simplest scalar–tensor theory, the Brans–Dicke (BD) theory. To this end, we introduce, in BD theory, novel Kundt spacetimes (without and with gyratonic terms), which…

Constraining scalar-tensor modified gravity with gravitational waves and large scale structure surveys

- Physics
- 2020

The first multi-messenger gravitational wave event has had a transformative effect on the space of modified gravity models. In this paper we study the enhanced tests of gravity that are possible with…

Gravitational memory effects and Bondi-Metzner-Sachs symmetries in scalar-tensor theories

- Physics
- 2020

The relation between gravitational memory effects and Bondi-Metzner-Sachs symmetries of the asymptotically flat spacetimes is studied in the scalar-tensor theory. For this purpose, the solutions to…

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