Tachyon constant-roll inflation in Randall-Sundrum II cosmology
Fuente:
arXiv
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| Autori principali: | , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2023
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| _version_ | 1866911939433594880 |
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| author | Stojanovic, Marko Bilic, Neven Dimitrijevic, Dragoljub D. Djordjevic, Goran S. Milosevic, Milan |
| author_facet | Stojanovic, Marko Bilic, Neven Dimitrijevic, Dragoljub D. Djordjevic, Goran S. Milosevic, Milan |
| contents | We study inflation in a model with constant second slow-roll parameter $η$. In this case, the Hubble expansion rate equation has analytical solutions describing four possible, nontrivial inflation scenarios. The evolution of the inflaton governed by a tachyon field is studied in the framework of the standard and Randall-Sundrum II cosmology. The attractor behavior of the solution is briefly demonstrated. Finally, the calculated values of the parameters $n_{\rm s}$ and $r$ are compared with observational data. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2306_02423 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Tachyon constant-roll inflation in Randall-Sundrum II cosmology Stojanovic, Marko Bilic, Neven Dimitrijevic, Dragoljub D. Djordjevic, Goran S. Milosevic, Milan General Relativity and Quantum Cosmology We study inflation in a model with constant second slow-roll parameter $η$. In this case, the Hubble expansion rate equation has analytical solutions describing four possible, nontrivial inflation scenarios. The evolution of the inflaton governed by a tachyon field is studied in the framework of the standard and Randall-Sundrum II cosmology. The attractor behavior of the solution is briefly demonstrated. Finally, the calculated values of the parameters $n_{\rm s}$ and $r$ are compared with observational data. |
| title | Tachyon constant-roll inflation in Randall-Sundrum II cosmology |
| topic | General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2306.02423 |