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Novel probe of graviton dispersion relations at nanohertz frequencies
Physical Review D, Volume: 110, Issue: 12, Start page: 124018
Swansea University Authors:
Bill Atkins , Ameek Malhotra
, Gianmassimo Tasinato
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DOI (Published version): 10.1103/physrevd.110.124018
Abstract
We generalise Phinney’s ‘practical theorem’ to account for modified graviton dispersion relations motivated by certain cosmological scenarios. Focusing on specific examples, we show how such modifications can induce characteristic localised distortions– bumps– in the frequency profile of the stochas...
Published in: | Physical Review D |
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ISSN: | 2470-0010 2470-0029 |
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American Physical Society (APS)
2024
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URI: | https://cronfa.swan.ac.uk/Record/cronfa68301 |
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2025-01-30T15:31:14.9588452 v2 68301 2024-11-19 Novel probe of graviton dispersion relations at nanohertz frequencies 44d9c939abda014cec8b6089f151d060 0009-0004-6931-8380 Bill Atkins Bill Atkins true false dd6ebf069325cdbdbeb597fa64d48063 0000-0001-8346-9995 Ameek Malhotra Ameek Malhotra true false cb754b073d1e4949c5e3db97744d3301 0000-0002-9835-4864 Gianmassimo Tasinato Gianmassimo Tasinato true false 2024-11-19 We generalise Phinney’s ‘practical theorem’ to account for modified graviton dispersion relations motivated by certain cosmological scenarios. Focusing on specific examples, we show how such modifications can induce characteristic localised distortions– bumps– in the frequency profile of the stochastic gravitational wave background emitted from distant binary sources. We concentrate on gravitational waves at nano-Hertz frequencies probed by pulsar timing arrays, and we forecast the capabilities of future experiments to accurately probe parameters controlling modified dispersion relations. Our predictions are based on properties of gravitational waves emitted in the first inspiral phase of the binary process, and do not rely on assumptions of non-linear effects occurring during the binary merging phase. Journal Article Physical Review D 110 12 124018 American Physical Society (APS) 2470-0010 2470-0029 9 12 2024 2024-12-09 10.1103/physrevd.110.124018 COLLEGE NANME COLLEGE CODE Swansea University SU Library paid the OA fee (TA Institutional Deal) We are partially funded by STFC Grant No. ST/X000648/1. 2025-01-30T15:31:14.9588452 2024-11-19T14:08:47.0197861 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics Bill Atkins 0009-0004-6931-8380 1 Ameek Malhotra 0000-0001-8346-9995 2 Gianmassimo Tasinato 0000-0002-9835-4864 3 68301__33142__2d394f1539a4471fbc4ce10cbb839070.pdf 68301.VOR.pdf 2024-12-16T10:55:57.5606499 Output 1327378 application/pdf Version of Record true Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. true eng https://creativecommons.org/licenses/by/4.0/ |
title |
Novel probe of graviton dispersion relations at nanohertz frequencies |
spellingShingle |
Novel probe of graviton dispersion relations at nanohertz frequencies Bill Atkins Ameek Malhotra Gianmassimo Tasinato |
title_short |
Novel probe of graviton dispersion relations at nanohertz frequencies |
title_full |
Novel probe of graviton dispersion relations at nanohertz frequencies |
title_fullStr |
Novel probe of graviton dispersion relations at nanohertz frequencies |
title_full_unstemmed |
Novel probe of graviton dispersion relations at nanohertz frequencies |
title_sort |
Novel probe of graviton dispersion relations at nanohertz frequencies |
author_id_str_mv |
44d9c939abda014cec8b6089f151d060 dd6ebf069325cdbdbeb597fa64d48063 cb754b073d1e4949c5e3db97744d3301 |
author_id_fullname_str_mv |
44d9c939abda014cec8b6089f151d060_***_Bill Atkins dd6ebf069325cdbdbeb597fa64d48063_***_Ameek Malhotra cb754b073d1e4949c5e3db97744d3301_***_Gianmassimo Tasinato |
author |
Bill Atkins Ameek Malhotra Gianmassimo Tasinato |
author2 |
Bill Atkins Ameek Malhotra Gianmassimo Tasinato |
format |
Journal article |
container_title |
Physical Review D |
container_volume |
110 |
container_issue |
12 |
container_start_page |
124018 |
publishDate |
2024 |
institution |
Swansea University |
issn |
2470-0010 2470-0029 |
doi_str_mv |
10.1103/physrevd.110.124018 |
publisher |
American Physical Society (APS) |
college_str |
Faculty of Science and Engineering |
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|
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facultyofscienceandengineering |
hierarchy_top_title |
Faculty of Science and Engineering |
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facultyofscienceandengineering |
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Faculty of Science and Engineering |
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School of Biosciences, Geography and Physics - Physics{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Physics |
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description |
We generalise Phinney’s ‘practical theorem’ to account for modified graviton dispersion relations motivated by certain cosmological scenarios. Focusing on specific examples, we show how such modifications can induce characteristic localised distortions– bumps– in the frequency profile of the stochastic gravitational wave background emitted from distant binary sources. We concentrate on gravitational waves at nano-Hertz frequencies probed by pulsar timing arrays, and we forecast the capabilities of future experiments to accurately probe parameters controlling modified dispersion relations. Our predictions are based on properties of gravitational waves emitted in the first inspiral phase of the binary process, and do not rely on assumptions of non-linear effects occurring during the binary merging phase. |
published_date |
2024-12-09T10:19:58Z |
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1824480715099602944 |
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11.051391 |