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Scalar-tensor cosmologies without screening

Research output: Contribution to journal › Article › peer-review

Standard

Scalar-tensor cosmologies without screening. / Noller, Johannes; Santoni, Luca; Trincherini, Enrico; Trombetta, Leonardo G.

In: Journal of Cosmology and Astroparticle Physics, Vol. 2021, No. 01, 045, 22.01.2021, p. 1-19.

Research output: Contribution to journal › Article › peer-review

Harvard

Noller, J, Santoni, L, Trincherini, E & Trombetta, LG 2021, 'Scalar-tensor cosmologies without screening', Journal of Cosmology and Astroparticle Physics, vol. 2021, no. 01, 045, pp. 1-19. https://doi.org/10.1088/1475-7516/2021/01/045

APA

Noller, J., Santoni, L., Trincherini, E., & Trombetta, L. G. (2021). Scalar-tensor cosmologies without screening. Journal of Cosmology and Astroparticle Physics, 2021(01), 1-19. [045]. https://doi.org/10.1088/1475-7516/2021/01/045

Vancouver

Noller J, Santoni L, Trincherini E, Trombetta LG. Scalar-tensor cosmologies without screening. Journal of Cosmology and Astroparticle Physics. 2021 Jan 22;2021(01):1-19. 045. https://doi.org/10.1088/1475-7516/2021/01/045

Author

Noller, Johannes ; Santoni, Luca ; Trincherini, Enrico ; Trombetta, Leonardo G. / Scalar-tensor cosmologies without screening. In: Journal of Cosmology and Astroparticle Physics. 2021 ; Vol. 2021, No. 01. pp. 1-19.

Bibtex

@article{4c48c064ad4041418f0bb2999b059a35,
title = "Scalar-tensor cosmologies without screening",
abstract = "Scalar-tensor theories are frequently only consistent with fifth force constraints in the presence of a screening mechanism, namely in order to suppress an otherwise unacceptably large coupling between the scalar and ordinary matter. Here we investigate precisely which subsets of Horndeski theories do not give rise to and/or require such a screening mechanism. We investigate these subsets in detail, deriving their form and discussing how they are restricted upon imposing additional bounds from the speed of gravitational waves, solar system tests and cosmological observables. Finally, we also identify what subsets of scalar-tensor theories precisely recover the predictions of standard (linearised) ΛCDM cosmologies in the quasi-static limit.",
keywords = "dark energy theory, modified gravity, RCUK, STFC, ST/S004572/1",
author = "Johannes Noller and Luca Santoni and Enrico Trincherini and Trombetta, {Leonardo G.}",
year = "2021",
month = jan,
day = "22",
doi = "10.1088/1475-7516/2021/01/045",
language = "English",
volume = "2021",
pages = "1--19",
journal = "Journal of Cosmology and Astroparticle Physics",
issn = "1475-7516",
publisher = "IOP Publishing",
number = "01",

}

RIS

TY - JOUR

T1 - Scalar-tensor cosmologies without screening

AU - Noller, Johannes

AU - Santoni, Luca

AU - Trincherini, Enrico

AU - Trombetta, Leonardo G.

PY - 2021/1/22

Y1 - 2021/1/22

N2 - Scalar-tensor theories are frequently only consistent with fifth force constraints in the presence of a screening mechanism, namely in order to suppress an otherwise unacceptably large coupling between the scalar and ordinary matter. Here we investigate precisely which subsets of Horndeski theories do not give rise to and/or require such a screening mechanism. We investigate these subsets in detail, deriving their form and discussing how they are restricted upon imposing additional bounds from the speed of gravitational waves, solar system tests and cosmological observables. Finally, we also identify what subsets of scalar-tensor theories precisely recover the predictions of standard (linearised) ΛCDM cosmologies in the quasi-static limit.

AB - Scalar-tensor theories are frequently only consistent with fifth force constraints in the presence of a screening mechanism, namely in order to suppress an otherwise unacceptably large coupling between the scalar and ordinary matter. Here we investigate precisely which subsets of Horndeski theories do not give rise to and/or require such a screening mechanism. We investigate these subsets in detail, deriving their form and discussing how they are restricted upon imposing additional bounds from the speed of gravitational waves, solar system tests and cosmological observables. Finally, we also identify what subsets of scalar-tensor theories precisely recover the predictions of standard (linearised) ΛCDM cosmologies in the quasi-static limit.

KW - dark energy theory

KW - modified gravity

KW - RCUK

KW - STFC

KW - ST/S004572/1

U2 - 10.1088/1475-7516/2021/01/045

DO - 10.1088/1475-7516/2021/01/045

M3 - Article

VL - 2021

SP - 1

EP - 19

JO - Journal of Cosmology and Astroparticle Physics

JF - Journal of Cosmology and Astroparticle Physics

SN - 1475-7516

IS - 01

M1 - 045

ER -

ID: 26996662