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Cosmic Superstrings Revisited in Light of NANOGrav 15-Year Data
We analyze cosmic superstring models in light of NANOGrav 15-year pulsar timing data. A good fit is found for a string tension $G \mu \sim 10^{-12} - 10^{-11}$ and a string intercommutation probability $p \sim 10^{-3} - 10^{-1}$. Extrapolation to higher frequencies assuming standard Big Bang cosmolo...
| Autores principales: | , , , |
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| Lenguaje: | eng |
| Publicado: |
2023
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| Materias: | |
| Acceso en línea: | http://cds.cern.ch/record/2863567 |
| _version_ | 1780977914782679040 |
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| author | Ellis, John Lewicki, Marek Lin, Chunshan Vaskonen, Ville |
| author_facet | Ellis, John Lewicki, Marek Lin, Chunshan Vaskonen, Ville |
| author_sort | Ellis, John |
| collection | CERN |
| description | We analyze cosmic superstring models in light of NANOGrav 15-year pulsar timing data. A good fit is found for a string tension $G \mu \sim 10^{-12} - 10^{-11}$ and a string intercommutation probability $p \sim 10^{-3} - 10^{-1}$. Extrapolation to higher frequencies assuming standard Big Bang cosmology is compatible at the 68% CL with the current LIGO/Virgo/KAGRA upper limit on a stochastic gravitational wave background in the 10 to 100 Hz range. The superstring interpretation of the NANOGrav data would be robustly testable by future experiments even in modified cosmological scenarios. |
| id | cern-2863567 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2023 |
| record_format | invenio |
| spelling | cern-28635672023-10-03T15:53:14Zhttp://cds.cern.ch/record/2863567engEllis, JohnLewicki, MarekLin, ChunshanVaskonen, VilleCosmic Superstrings Revisited in Light of NANOGrav 15-Year Datahep-thParticle Physics - Theoryhep-phParticle Physics - Phenomenologygr-qcGeneral Relativity and Cosmologyastro-ph.HEAstrophysics and Astronomyastro-ph.COAstrophysics and AstronomyWe analyze cosmic superstring models in light of NANOGrav 15-year pulsar timing data. A good fit is found for a string tension $G \mu \sim 10^{-12} - 10^{-11}$ and a string intercommutation probability $p \sim 10^{-3} - 10^{-1}$. Extrapolation to higher frequencies assuming standard Big Bang cosmology is compatible at the 68% CL with the current LIGO/Virgo/KAGRA upper limit on a stochastic gravitational wave background in the 10 to 100 Hz range. The superstring interpretation of the NANOGrav data would be robustly testable by future experiments even in modified cosmological scenarios.arXiv:2306.17147KCL-PH-TH/2023-38CERN-TH-2023-126AION-REPORT/2023-07oai:cds.cern.ch:28635672023-06-29 |
| spellingShingle | hep-th Particle Physics - Theory hep-ph Particle Physics - Phenomenology gr-qc General Relativity and Cosmology astro-ph.HE Astrophysics and Astronomy astro-ph.CO Astrophysics and Astronomy Ellis, John Lewicki, Marek Lin, Chunshan Vaskonen, Ville Cosmic Superstrings Revisited in Light of NANOGrav 15-Year Data |
| title | Cosmic Superstrings Revisited in Light of NANOGrav 15-Year Data |
| title_full | Cosmic Superstrings Revisited in Light of NANOGrav 15-Year Data |
| title_fullStr | Cosmic Superstrings Revisited in Light of NANOGrav 15-Year Data |
| title_full_unstemmed | Cosmic Superstrings Revisited in Light of NANOGrav 15-Year Data |
| title_short | Cosmic Superstrings Revisited in Light of NANOGrav 15-Year Data |
| title_sort | cosmic superstrings revisited in light of nanograv 15-year data |
| topic | hep-th Particle Physics - Theory hep-ph Particle Physics - Phenomenology gr-qc General Relativity and Cosmology astro-ph.HE Astrophysics and Astronomy astro-ph.CO Astrophysics and Astronomy |
| url | http://cds.cern.ch/record/2863567 |
| work_keys_str_mv | AT ellisjohn cosmicsuperstringsrevisitedinlightofnanograv15yeardata AT lewickimarek cosmicsuperstringsrevisitedinlightofnanograv15yeardata AT linchunshan cosmicsuperstringsrevisitedinlightofnanograv15yeardata AT vaskonenville cosmicsuperstringsrevisitedinlightofnanograv15yeardata |