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Vector dark matter, inflation, and non-minimal couplings with gravity

Ogan Ozsoy Orcid Logo, Gianmassimo Tasinato Orcid Logo

Journal of Cosmology and Astroparticle Physics, Volume: 2024, Issue: 06, Start page: 003

Swansea University Authors: Ogan Ozsoy Orcid Logo, Gianmassimo Tasinato Orcid Logo

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DOI (Published version): 10.1088/1475-7516/2024/06/003

Abstract

We propose a cosmological dark matter production mechanism in the form of a longitudinal massive vector boson. We build upon the work [1] including non-minimal couplings of the massive vector with gravity, developing a well motivated set-up from an effective field theory perspective. We carefully tr...

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Published in: Journal of Cosmology and Astroparticle Physics
ISSN: 1475-7516
Published: IOP Publishing 2024
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URI: https://cronfa.swan.ac.uk/Record/cronfa67092
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spelling v2 67092 2024-07-12 Vector dark matter, inflation, and non-minimal couplings with gravity bedcd6ceb7665b372690aff22dd18cec 0000-0001-8783-1728 Ogan Ozsoy Ogan Ozsoy true false cb754b073d1e4949c5e3db97744d3301 0000-0002-9835-4864 Gianmassimo Tasinato Gianmassimo Tasinato true false 2024-07-12 BGPS We propose a cosmological dark matter production mechanism in the form of a longitudinal massive vector boson. We build upon the work [1] including non-minimal couplings of the massive vector with gravity, developing a well motivated set-up from an effective field theory perspective. We carefully track the dynamics of vector field in passing from inflation to radiation dominated universe to show that the late time abundance of longitudinal modes — excited initially by the quantum fluctuations during inflation — can provide the observed dark matter abundance for sufficiently weak non-minimal coupling and wide range of vector masses 5 × 10-7 ≲ m [eV] ≲ 5 × 103. The final abundance of dark matter depends on two parameter, the vector mass and its non-minimal coupling with gravity. We discuss experimental venues to probe this framework, including the production of a stochastic gravitational wave background. The latter is especially interesting, as the same mechanism that generates dark matter can potentially lead to the production of gravitational waves in the LISA frequency band, through the second-order effects of large dark matter iso-curvature perturbations at small scales. We take a first step in this direction, identifying the potential information that gravitational wave experiments can provide on the parameter space of dark matter within this scenario. Journal Article Journal of Cosmology and Astroparticle Physics 2024 06 003 IOP Publishing 1475-7516 dark matter theory, inflation 5 6 2024 2024-06-05 10.1088/1475-7516/2024/06/003 COLLEGE NANME Biosciences Geography and Physics School COLLEGE CODE BGPS Swansea University Another institution paid the OA fee 2024-08-30T13:40:42.0697554 2024-07-12T17:39:00.4686154 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics Ogan Ozsoy 0000-0001-8783-1728 1 Gianmassimo Tasinato 0000-0002-9835-4864 2 67092__31188__286a3473110740d4baaebb52deeb1667.pdf 67092.VoR.pdf 2024-08-30T13:38:11.5838448 Output 4322293 application/pdf Version of Record true Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. true eng http://creativecommons.org/licenses/by/4.0
title Vector dark matter, inflation, and non-minimal couplings with gravity
spellingShingle Vector dark matter, inflation, and non-minimal couplings with gravity
Ogan Ozsoy
Gianmassimo Tasinato
title_short Vector dark matter, inflation, and non-minimal couplings with gravity
title_full Vector dark matter, inflation, and non-minimal couplings with gravity
title_fullStr Vector dark matter, inflation, and non-minimal couplings with gravity
title_full_unstemmed Vector dark matter, inflation, and non-minimal couplings with gravity
title_sort Vector dark matter, inflation, and non-minimal couplings with gravity
author_id_str_mv bedcd6ceb7665b372690aff22dd18cec
cb754b073d1e4949c5e3db97744d3301
author_id_fullname_str_mv bedcd6ceb7665b372690aff22dd18cec_***_Ogan Ozsoy
cb754b073d1e4949c5e3db97744d3301_***_Gianmassimo Tasinato
author Ogan Ozsoy
Gianmassimo Tasinato
author2 Ogan Ozsoy
Gianmassimo Tasinato
format Journal article
container_title Journal of Cosmology and Astroparticle Physics
container_volume 2024
container_issue 06
container_start_page 003
publishDate 2024
institution Swansea University
issn 1475-7516
doi_str_mv 10.1088/1475-7516/2024/06/003
publisher IOP Publishing
college_str Faculty of Science and Engineering
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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 propose a cosmological dark matter production mechanism in the form of a longitudinal massive vector boson. We build upon the work [1] including non-minimal couplings of the massive vector with gravity, developing a well motivated set-up from an effective field theory perspective. We carefully track the dynamics of vector field in passing from inflation to radiation dominated universe to show that the late time abundance of longitudinal modes — excited initially by the quantum fluctuations during inflation — can provide the observed dark matter abundance for sufficiently weak non-minimal coupling and wide range of vector masses 5 × 10-7 ≲ m [eV] ≲ 5 × 103. The final abundance of dark matter depends on two parameter, the vector mass and its non-minimal coupling with gravity. We discuss experimental venues to probe this framework, including the production of a stochastic gravitational wave background. The latter is especially interesting, as the same mechanism that generates dark matter can potentially lead to the production of gravitational waves in the LISA frequency band, through the second-order effects of large dark matter iso-curvature perturbations at small scales. We take a first step in this direction, identifying the potential information that gravitational wave experiments can provide on the parameter space of dark matter within this scenario.
published_date 2024-06-05T13:40:41Z
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score 11.028798

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