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Cosmic acceleration from Abelian symmetry breaking

Gianmassimo Tasinato Orcid Logo

Journal of High Energy Physics, Volume: 2014, Issue: 4

Swansea University Author: Gianmassimo Tasinato Orcid Logo

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DOI (Published version): 10.1007/JHEP04(2014)067

Abstract

We discuss a consistent theory for a self-interacting vector field, breaking an Abelian symmetry in such a way to obtain an interesting behavior for its longitudinal polarization. In an appropriate decoupling limit, the dynamics of the longitudinal mode is controlled by Galileon interactions. The fu...

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Published in: Journal of High Energy Physics
ISSN: 1029-8479
Published: 2014
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URI: https://cronfa.swan.ac.uk/Record/cronfa21704
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first_indexed 2015-05-27T02:10:56Z
last_indexed 2019-08-09T15:04:00Z
id cronfa21704
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spelling 2019-08-06T14:27:32.9475684 v2 21704 2015-05-26 Cosmic acceleration from Abelian symmetry breaking cb754b073d1e4949c5e3db97744d3301 0000-0002-9835-4864 Gianmassimo Tasinato Gianmassimo Tasinato true false 2015-05-26 SPH We discuss a consistent theory for a self-interacting vector field, breaking an Abelian symmetry in such a way to obtain an interesting behavior for its longitudinal polarization. In an appropriate decoupling limit, the dynamics of the longitudinal mode is controlled by Galileon interactions. The full theory away from the decoupling limit does not propagate ghost modes, and can be investigated in regimes where non-linearities become important. When coupled to gravity, this theory provides a candidate for dark energy, since it admits de Sitter cosmological solutions characterized by a technically natural value for the Hubble parameter. We also consider the homogeneous evolution when, besides the vector, additional matter in the form of perfect fluids is included. We find that the vector can have an important role in characterizing the universe expansion. Journal Article Journal of High Energy Physics 2014 4 1029-8479 9 4 2014 2014-04-09 10.1007/JHEP04(2014)067 COLLEGE NANME Physics COLLEGE CODE SPH Swansea University SCOAP 2019-08-06T14:27:32.9475684 2015-05-26T14:55:42.5515071 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics Gianmassimo Tasinato 0000-0002-9835-4864 1 0021704-23052017192758.pdf tasinato2014.pdf 2017-05-23T19:27:58.2170000 Output 345026 application/pdf Version of Record true 2017-05-23T00:00:00.0000000 true eng
title Cosmic acceleration from Abelian symmetry breaking
spellingShingle Cosmic acceleration from Abelian symmetry breaking
Gianmassimo Tasinato
title_short Cosmic acceleration from Abelian symmetry breaking
title_full Cosmic acceleration from Abelian symmetry breaking
title_fullStr Cosmic acceleration from Abelian symmetry breaking
title_full_unstemmed Cosmic acceleration from Abelian symmetry breaking
title_sort Cosmic acceleration from Abelian symmetry breaking
author_id_str_mv cb754b073d1e4949c5e3db97744d3301
author_id_fullname_str_mv cb754b073d1e4949c5e3db97744d3301_***_Gianmassimo Tasinato
author Gianmassimo Tasinato
author2 Gianmassimo Tasinato
format Journal article
container_title Journal of High Energy Physics
container_volume 2014
container_issue 4
publishDate 2014
institution Swansea University
issn 1029-8479
doi_str_mv 10.1007/JHEP04(2014)067
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Physics{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Physics
document_store_str 1
active_str 0
description We discuss a consistent theory for a self-interacting vector field, breaking an Abelian symmetry in such a way to obtain an interesting behavior for its longitudinal polarization. In an appropriate decoupling limit, the dynamics of the longitudinal mode is controlled by Galileon interactions. The full theory away from the decoupling limit does not propagate ghost modes, and can be investigated in regimes where non-linearities become important. When coupled to gravity, this theory provides a candidate for dark energy, since it admits de Sitter cosmological solutions characterized by a technically natural value for the Hubble parameter. We also consider the homogeneous evolution when, besides the vector, additional matter in the form of perfect fluids is included. We find that the vector can have an important role in characterizing the universe expansion.
published_date 2014-04-09T03:25:48Z
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score 11.013371

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