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Parity-violating gravity and GW170817 in non-Riemannian cosmology

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Parity-violating gravity and GW170817 in non-Riemannian cosmology. / Conroy, A.; Koivisto, T.

In: Journal of Cosmology and Astroparticle Physics, Vol. 2019, No. 12, 016, 04.12.2019.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

Conroy, A & Koivisto, T 2019, 'Parity-violating gravity and GW170817 in non-Riemannian cosmology', Journal of Cosmology and Astroparticle Physics, vol. 2019, no. 12, 016. https://doi.org/10.1088/1475-7516/2019/12/016

APA

Conroy, A., & Koivisto, T. (2019). Parity-violating gravity and GW170817 in non-Riemannian cosmology. Journal of Cosmology and Astroparticle Physics, 2019(12), [016]. https://doi.org/10.1088/1475-7516/2019/12/016

Vancouver

Conroy A, Koivisto T. Parity-violating gravity and GW170817 in non-Riemannian cosmology. Journal of Cosmology and Astroparticle Physics. 2019 Dec 4;2019(12). 016. https://doi.org/10.1088/1475-7516/2019/12/016

Author

Conroy, A. ; Koivisto, T. / Parity-violating gravity and GW170817 in non-Riemannian cosmology. In: Journal of Cosmology and Astroparticle Physics. 2019 ; Vol. 2019, No. 12.

Bibtex

@article{6b25bf3e372e4e14825253668042976e,
title = "Parity-violating gravity and GW170817 in non-Riemannian cosmology",
abstract = "The cosmological propagation of tensor perturbations is studied in the context of parity-violating extensions of the symmetric teleparallel equivalent of General Relativity theory. This non-Riemannian formulation allows for a wider variety of consistent extensions than the metric formulation of gravity theory. It is found that while many of the possible quadratic terms do not influence the propagation of the gravitational waves, a generic modification predicts a signature that distinguishes the left- A nd right-handed circular polarizations. The parameters of such modifications can be constrained stringently because the propagation speed of the gravitational waves is scale-dependent and differs from the speed of light. {\textcopyright} 2019 IOP Publishing Ltd and Sissa Medialab.",
keywords = "Gravitational waves, modified gravity, theory",
author = "A. Conroy and T. Koivisto",
year = "2019",
month = dec,
day = "4",
doi = "10.1088/1475-7516/2019/12/016",
language = "English",
volume = "2019",
journal = "Journal of Cosmology and Astroparticle Physics",
issn = "1475-7516",
publisher = "IOP Publishing",
number = "12",

}

RIS

TY - JOUR

T1 - Parity-violating gravity and GW170817 in non-Riemannian cosmology

AU - Conroy, A.

AU - Koivisto, T.

PY - 2019/12/4

Y1 - 2019/12/4

N2 - The cosmological propagation of tensor perturbations is studied in the context of parity-violating extensions of the symmetric teleparallel equivalent of General Relativity theory. This non-Riemannian formulation allows for a wider variety of consistent extensions than the metric formulation of gravity theory. It is found that while many of the possible quadratic terms do not influence the propagation of the gravitational waves, a generic modification predicts a signature that distinguishes the left- A nd right-handed circular polarizations. The parameters of such modifications can be constrained stringently because the propagation speed of the gravitational waves is scale-dependent and differs from the speed of light. © 2019 IOP Publishing Ltd and Sissa Medialab.

AB - The cosmological propagation of tensor perturbations is studied in the context of parity-violating extensions of the symmetric teleparallel equivalent of General Relativity theory. This non-Riemannian formulation allows for a wider variety of consistent extensions than the metric formulation of gravity theory. It is found that while many of the possible quadratic terms do not influence the propagation of the gravitational waves, a generic modification predicts a signature that distinguishes the left- A nd right-handed circular polarizations. The parameters of such modifications can be constrained stringently because the propagation speed of the gravitational waves is scale-dependent and differs from the speed of light. © 2019 IOP Publishing Ltd and Sissa Medialab.

KW - Gravitational waves

KW - modified gravity

KW - theory

U2 - 10.1088/1475-7516/2019/12/016

DO - 10.1088/1475-7516/2019/12/016

M3 - Journal article

VL - 2019

JO - Journal of Cosmology and Astroparticle Physics

JF - Journal of Cosmology and Astroparticle Physics

SN - 1475-7516

IS - 12

M1 - 016

ER -