New Inflation in Waterfall Region
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arXiv
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| Format: | Preprint |
| Published: |
2023
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| _version_ | 1866914624025133056 |
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| author | Khan, Niamat Ullah Ijaz, Nadir Rehman, Mansoor Ur |
| author_facet | Khan, Niamat Ullah Ijaz, Nadir Rehman, Mansoor Ur |
| contents | We introduce a class of new inflation models within the waterfall region of a generalized hybrid inflation framework. The initial conditions are generated in the valley of hybrid preinflation. Both single-field and multi-field inflationary scenarios have been identified within this context. A supersymmetric realization of this scenario can successfully be achieved within the tribrid inflation framework. To assess the model's viability, we calculate the predictions of inflationary observables using the $δN$ formalism, demonstrating excellent agreement with the most recent Planck data. Furthermore, this model facilitates successful reheating and nonthermal leptogenesis, with the matter-field component of the inflaton identified as a sneutrino. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2309_06953 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | New Inflation in Waterfall Region Khan, Niamat Ullah Ijaz, Nadir Rehman, Mansoor Ur High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics We introduce a class of new inflation models within the waterfall region of a generalized hybrid inflation framework. The initial conditions are generated in the valley of hybrid preinflation. Both single-field and multi-field inflationary scenarios have been identified within this context. A supersymmetric realization of this scenario can successfully be achieved within the tribrid inflation framework. To assess the model's viability, we calculate the predictions of inflationary observables using the $δN$ formalism, demonstrating excellent agreement with the most recent Planck data. Furthermore, this model facilitates successful reheating and nonthermal leptogenesis, with the matter-field component of the inflaton identified as a sneutrino. |
| title | New Inflation in Waterfall Region |
| topic | High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2309.06953 |