More accurate gravitational wave backgrounds from cosmic strings
Fuente:
arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| Accesso online: | |
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| _version_ | 1866918407836794880 |
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| author | Wachter, Jeremy M. Olum, Ken D. Blanco-Pillado, Jose J. |
| author_facet | Wachter, Jeremy M. Olum, Ken D. Blanco-Pillado, Jose J. |
| contents | We derive a general procedure for calculating the gravitational wave background (GWB) from cosmic string loops whose typical shape evolves over time, as in gravitational backreaction. Using the results of a large-scale study of numerical gravitational backreaction on Nambu-Goto cosmic string loops, we construct GWBs of backreacted cosmic strings for a range of tensions and frequencies of cosmological interest, and compare them to current and upcoming gravitational wave detectors. The GWBs are lower than prior predictions by anywhere from a few percent to around 30\%, depending on the frequency and tension in question. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_16590 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | More accurate gravitational wave backgrounds from cosmic strings Wachter, Jeremy M. Olum, Ken D. Blanco-Pillado, Jose J. General Relativity and Quantum Cosmology Cosmology and Nongalactic Astrophysics We derive a general procedure for calculating the gravitational wave background (GWB) from cosmic string loops whose typical shape evolves over time, as in gravitational backreaction. Using the results of a large-scale study of numerical gravitational backreaction on Nambu-Goto cosmic string loops, we construct GWBs of backreacted cosmic strings for a range of tensions and frequencies of cosmological interest, and compare them to current and upcoming gravitational wave detectors. The GWBs are lower than prior predictions by anywhere from a few percent to around 30\%, depending on the frequency and tension in question. |
| title | More accurate gravitational wave backgrounds from cosmic strings |
| topic | General Relativity and Quantum Cosmology Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2411.16590 |