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

  title={Spin-orbit effects for compact binaries in scalar-tensor gravity},
  author={Philippe Brax and A. C. Davis and Scott Melville and Leong Khim Wong},
  journal={Journal of Cosmology and Astroparticle Physics},
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 alternative theories of gravity. However, spin effects are still relatively unexplored in this context. In this work, we construct an effective point-particle action for a generic spinning body that can couple both conformally and disformally to a real scalar field, and we show that requiring the… 

An S-matrix approach to gravitational-wave physics

  • P. Vanhove
  • Physics
    Philosophical Transactions of the Royal Society A
  • 2022
The detection of gravitational waves emitted by binary systems has opened a new astronomical window into the Universe. We describe recent advances in the field of scattering amplitudes applied to the

Effective field theories of gravity and compact binary dynamics: A Snowmass 2021 whitepaper

In this whitepaper, I describe modern applications of effective field theory (EFT) techniques to classical and quantum gravity, with relevance to problems in astrophysics and cosmology. As in

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

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

Constraining spontaneous black hole scalarization in scalar-tensor-Gauss-Bonnet theories with current gravitational-wave data

We examine the constraining power of current gravitational-wave data on scalar-tensor-Gauss-Bonnet theories that allow for the spontaneous scalarization of black holes. In the fiducial model that we

Investigating the relation between gravitational wave tests of general relativity

Nathan K. Johnson-McDaniel,1, 2 Abhirup Ghosh,3 Sudarshan Ghonge,4 Muhammed Saleem,5, 6 N. V. Krishnendu,7 and James A. Clark8, 4 Department of Applied Mathematics and Theoretical Physics, Centre for

Stars disformally coupled to a shift-symmetric scalar field

We investigate static and spherically symmetric stars disformally coupled to a scalar field. The scalar field is assumed to be shift symmetric, and hence the conformal and disformal factors of the



No evidence of kinetic screening in merging binary neutron stars

Miguel Bezares, 2 Ricard Aguilera-Miret, 4 Lotte ter Haar, 2 Marco Crisostomi, 2 Carlos Palenzuela, 4 and Enrico Barausse 2 SISSA, Via Bonomea 265, 34136 Trieste, Italy and INFN Sezione di Trieste

Scalar fields near compact objects: resummation versus UV completion

Low-energy effective field theories containing a light scalar field are used extensively in cosmology, but often there is a tension between embedding such theories in a healthy UV completion and

Observation of Gravitational Waves from Two Neutron Star–Black Hole Coalescences

We report the observation of gravitational waves from two compact binary coalescences in LIGO’s and Virgo’s third observing run with properties consistent with neutron star–black hole (NSBH)

The effect of screening mechanisms on black hole binary inspiral waveforms

Scalar-tensor theories leaving significant modifications of gravity at cosmological scales rely on screening mechanisms to recover General Relativity (GR) in high-density regions and pass stringent

Extended reduced-order surrogate models for scalar-tensor gravity in the strong field and applications to binary pulsars and gravitational waves

Minghao Guo,1, ∗ Junjie Zhao,2 and Lijing Shao3, 4, † 1Peking University, Beijing 100871, China 2School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University,

Post-Newtonian gravitational and scalar waves in scalar-Gauss–Bonnet gravity

Gravitational waves emitted by black hole binary inspiral and mergers enable unprecedented strong-field tests of gravity, requiring accurate theoretical modeling of the expected signals in extensions

Modified Gravity and Cosmology: An Update by the CANTATA Network

General Relativity and the ΛCDM framework are currently the standard lore and constitute the concordance paradigm. Nevertheless, long-standing open theoretical issues, as well as possible new

Dynamics of Spontaneous Black Hole Scalarization and Mergers in Einstein-Scalar-Gauss-Bonnet Gravity.

It is shown that there is a range of parameter space where the theory maintains hyperbolic evolution and for which the instability saturates in a scalarized black hole that is stable without symmetry assumptions, but this parameter space range is significantly smaller than the range for which stationary scalarization black hole solutions exist.

Neutron stars in scalar-tensor theories: Analytic scalar charges and universal relations

Neutron stars are ideal astrophysical sources to probe general relativity due to their large compactnesses and strong gravitational fields. For example, binary pulsar and gravitational wave

Near and far zones in two-body dynamics: An effective field theory perspective

We revisit several aspects of the interaction of self-gravitating, slowly varying sources with their own emitted radiation within the context of post-Newtonian approximation to General Relativity. We