# Dipolar tidal effects in scalar-tensor theories

@article{Bernard2020DipolarTE, title={Dipolar tidal effects in scalar-tensor theories}, author={L. Bernard}, journal={Physical Review D}, year={2020} }

The inclusion of finite-size effects in the gravitational waveform templates allows one not only to constrain the internal structure of compact objects, but to test deviations from general relativity. Here, we address the problem of tidal effects in massless scalar-tensor theories. We introduce the scalar-type tidal Love numbers that relate the time-varying scalar dipole moment to the induced scalar tidal field. We compute the leading-order scalar tidal contribution in the conservative dynamics…

## 13 Citations

### Gravitational waves in scalar-tensor theory to one-and-a-half post-Newtonian order

- PhysicsJournal of Cosmology and Astroparticle Physics
- 2022

We compute the gravitational waves generated by compact binary systems in a class of massless scalar-tensor (ST) theories to the 1.5 post-Newtonian (1.5PN) order beyond the standard quadrupole…

### Gravitational waveforms from the quasicircular inspiral of compact binaries in massive Brans-Dicke theory

- GeologyPhysical Review D
- 2020

We study the gravitational waves emitted by an inspiralling compact binary system in massive Brans-Dicke theory. We calculate explicitly and analytically the expressions for the time-domain waveforms…

### Spin-orbit effects for compact binaries in scalar-tensor gravity

- PhysicsJournal of Cosmology and Astroparticle Physics
- 2021

Gravitational waves provide us with a new window into our Universe, and have already been used to place strong constrains on the existence of light scalar fields, which are a common feature in many…

### Testing gravity with the two-body problem.

- Physics
- 2020

Gravitational waves provide a new probe into the strong-field regime of gravity. It is thus essential to identify the predictions of General Relativity on the nature of the two-body problem, and to…

### Effective-action model for dynamical scalarization beyond the adiabatic approximation

- Physics
- 2022

In certain scalar-ﬁeld extensions to general relativity, scalar charges can develop on compact objects in an inspiraling binary—an e ﬀ ect known as dynamical scalarization. This e ﬀ ect can be…

### Environmental effects in gravitational-wave physics: Tidal deformability of black holes immersed in matter

- PhysicsPhysical Review D
- 2020

The tidal deformability of compact objects by a companion has a detectable imprint in the gravitational waves emitted by a binary system. This effect is governed by the so-called tidal Love numbers.…

### Generalized Regge-Wheeler Equation from Effective Field Theory of Black Hole Perturbations with a Timelike Scalar Profile

- Physics
- 2022

Recently, the Eﬀective Field Theory (EFT) of perturbations on an arbitrary background metric with a timelike scalar proﬁle was formulated in the context of scalar-tensor theories. Here, we generalize…

### Gravitational waveforms from the inspiral of compact binaries in the Brans-Dicke theory in an expanding Universe

- Physics, Education
- 2022

In modiﬁed gravity theories, such as the Brans-Dicke theory, the background evolution of the Universe and the perturbation around it are diﬀerent from that in general relativity. Therefore, the…

### Post-Newtonian Lagrangian of an N -body system with arbitrary mass and spin multipoles

- Physics
- 2020

The present paper derives the post-Newtonian Lagrangian of translational motion of N arbitrary-structured bodies with all mass and spin multipoles in a scalar-tensor theory of gravity. The multipoles…

### Effective field theory of black hole perturbations with timelike scalar profile: formulation

- PhysicsJournal of Cosmology and Astroparticle Physics
- 2022

We formulate the Effective Field Theory (EFT) of perturbations within scalar-tensor theories on an inhomogeneous background. The EFT is constructed while keeping a background of a scalar field to be…

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