Extended scalar-tensor theories of gravity

Crisostomi, Marco; Koyama, Kazuya; Tasinato, Gianmassimo

doi:10.1088/1475-7516/2016/04/044

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Extended scalar-tensor theories of gravity

Marco Crisostomi, Kazuya Koyama, Gianmassimo Tasinato

Journal of Cosmology and Astroparticle Physics, Volume: 2016, Issue: 04, Pages: 044 - 044

Swansea University Author: Gianmassimo Tasinato

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Article funded by SCOAP. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 License. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
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DOI (Published version): 10.1088/1475-7516/2016/04/044

Abstract

We study new consistent scalar-tensor theories of gravity recently introduced by Langlois and Noui with potentially interesting cosmological applications. We derive the conditions for the existence of a primary constraint that prevents the propagation of an additional dangerous mode associated with...

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Published in:	Journal of Cosmology and Astroparticle Physics
ISSN:	1475-7516
Published:	2016
Online Access:	Check full text
URI:	https://cronfa.swan.ac.uk/Record/cronfa28506
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first_indexed	2016-06-03T12:21:11Z
last_indexed	2020-07-20T12:44:46Z
id	cronfa28506
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spelling	2020-07-20T11:04:36.3869302 v2 28506 2016-06-03 Extended scalar-tensor theories of gravity cb754b073d1e4949c5e3db97744d3301 0000-0002-9835-4864 Gianmassimo Tasinato Gianmassimo Tasinato true false 2016-06-03 SPH We study new consistent scalar-tensor theories of gravity recently introduced by Langlois and Noui with potentially interesting cosmological applications. We derive the conditions for the existence of a primary constraint that prevents the propagation of an additional dangerous mode associated with higher order equations of motion. We then classify the most general, consistent scalar-tensor theories that are at most quadratic in the second derivatives of the scalar field. In addition, we investigate the possible connection between these theories and (beyond) Horndeski through conformal and disformal transformations. Finally, we point out that these theories can be associated with new operators in the effective field theory of dark energy, which might open up new possibilities to test dark energy models in future surveys. Journal Article Journal of Cosmology and Astroparticle Physics 2016 04 044 044 1475-7516 21 4 2016 2016-04-21 10.1088/1475-7516/2016/04/044 Article funded by SCOAP. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 License. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. COLLEGE NANME Physics COLLEGE CODE SPH Swansea University SCOAP 2020-07-20T11:04:36.3869302 2016-06-03T08:13:02.3549917 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics Marco Crisostomi 1 Kazuya Koyama 2 Gianmassimo Tasinato 0000-0002-9835-4864 3 0028506-14102016125328.pdf jcap042016044.pdf 2016-10-14T12:53:28.4530000 Output 261159 application/pdf Version of Record true 2016-10-14T00:00:00.0000000 Article funded by SCOAP. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 License. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. true
title	Extended scalar-tensor theories of gravity
spellingShingle	Extended scalar-tensor theories of gravity Gianmassimo Tasinato
title_short	Extended scalar-tensor theories of gravity
title_full	Extended scalar-tensor theories of gravity
title_fullStr	Extended scalar-tensor theories of gravity
title_full_unstemmed	Extended scalar-tensor theories of gravity
title_sort	Extended scalar-tensor theories of gravity
author_id_str_mv	cb754b073d1e4949c5e3db97744d3301
author_id_fullname_str_mv	cb754b073d1e4949c5e3db97744d3301_***_Gianmassimo Tasinato
author	Gianmassimo Tasinato
author2	Marco Crisostomi Kazuya Koyama Gianmassimo Tasinato
format	Journal article
container_title	Journal of Cosmology and Astroparticle Physics
container_volume	2016
container_issue	04
container_start_page	044
publishDate	2016
institution	Swansea University
issn	1475-7516
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description	We study new consistent scalar-tensor theories of gravity recently introduced by Langlois and Noui with potentially interesting cosmological applications. We derive the conditions for the existence of a primary constraint that prevents the propagation of an additional dangerous mode associated with higher order equations of motion. We then classify the most general, consistent scalar-tensor theories that are at most quadratic in the second derivatives of the scalar field. In addition, we investigate the possible connection between these theories and (beyond) Horndeski through conformal and disformal transformations. Finally, we point out that these theories can be associated with new operators in the effective field theory of dark energy, which might open up new possibilities to test dark energy models in future surveys.
published_date	2016-04-21T03:34:41Z
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score	11.013371

Extended scalar-tensor theories of gravity

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