Dual inflation and bounce cosmologies interpretation of pulsar timing array data
Abstract We explore a dual scenario of generalized inflation and bounce cosmologies, producing a scale-invariant curvature perturbation spectrum. Bayesian analysis with pulsar timing array data identifies, for the first time, viable regions from inflation and bounce that simultaneously explain stoch...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2024-09-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | https://doi.org/10.1007/JHEP09(2024)138 |
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| _version_ | 1850169254862651392 |
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| author | Changhong Li Junrong Lai Jinjie Xiang Chaofan Wu |
| author_facet | Changhong Li Junrong Lai Jinjie Xiang Chaofan Wu |
| author_sort | Changhong Li |
| collection | DOAJ |
| description | Abstract We explore a dual scenario of generalized inflation and bounce cosmologies, producing a scale-invariant curvature perturbation spectrum. Bayesian analysis with pulsar timing array data identifies, for the first time, viable regions from inflation and bounce that simultaneously explain stochastic gravitational wave background (SGWB) signals and CMB anisotropies. Bayes factor calculations strongly favor this dual scenario over conventional sources and provide initial evidence of a duality between inflation and bounce regarding SGWB, offering new insights for early universe model-building and future observations. |
| format | Article |
| id | doaj-art-6e75c8d72b1f4a6898bfd65e4d8154a3 |
| institution | OA Journals |
| issn | 1029-8479 |
| language | English |
| publishDate | 2024-09-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj-art-6e75c8d72b1f4a6898bfd65e4d8154a32025-08-20T02:20:45ZengSpringerOpenJournal of High Energy Physics1029-84792024-09-012024913510.1007/JHEP09(2024)138Dual inflation and bounce cosmologies interpretation of pulsar timing array dataChanghong Li0Junrong Lai1Jinjie Xiang2Chaofan Wu3Department of Astronomy, Key Laboratory of Astroparticle Physics of Yunnan Province, School of Physics and Astronomy, Yunnan UniversityDepartment of Astronomy, Key Laboratory of Astroparticle Physics of Yunnan Province, School of Physics and Astronomy, Yunnan UniversityDepartment of Astronomy, Key Laboratory of Astroparticle Physics of Yunnan Province, School of Physics and Astronomy, Yunnan UniversityDepartment of Astronomy, Key Laboratory of Astroparticle Physics of Yunnan Province, School of Physics and Astronomy, Yunnan UniversityAbstract We explore a dual scenario of generalized inflation and bounce cosmologies, producing a scale-invariant curvature perturbation spectrum. Bayesian analysis with pulsar timing array data identifies, for the first time, viable regions from inflation and bounce that simultaneously explain stochastic gravitational wave background (SGWB) signals and CMB anisotropies. Bayes factor calculations strongly favor this dual scenario over conventional sources and provide initial evidence of a duality between inflation and bounce regarding SGWB, offering new insights for early universe model-building and future observations.https://doi.org/10.1007/JHEP09(2024)138Cosmological modelsEarly Universe Particle PhysicsCosmology of Theories BSMPhase Transitions in the Early Universe |
| spellingShingle | Changhong Li Junrong Lai Jinjie Xiang Chaofan Wu Dual inflation and bounce cosmologies interpretation of pulsar timing array data Journal of High Energy Physics Cosmological models Early Universe Particle Physics Cosmology of Theories BSM Phase Transitions in the Early Universe |
| title | Dual inflation and bounce cosmologies interpretation of pulsar timing array data |
| title_full | Dual inflation and bounce cosmologies interpretation of pulsar timing array data |
| title_fullStr | Dual inflation and bounce cosmologies interpretation of pulsar timing array data |
| title_full_unstemmed | Dual inflation and bounce cosmologies interpretation of pulsar timing array data |
| title_short | Dual inflation and bounce cosmologies interpretation of pulsar timing array data |
| title_sort | dual inflation and bounce cosmologies interpretation of pulsar timing array data |
| topic | Cosmological models Early Universe Particle Physics Cosmology of Theories BSM Phase Transitions in the Early Universe |
| url | https://doi.org/10.1007/JHEP09(2024)138 |
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