Quintessential Inflation in Palatini $F(R,X)$ gravity
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arXiv
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| Auteurs principaux: | , , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866917085108502528 |
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| author | Dimopoulos, Konstantinos Dioguardi, Christian Hütsi, Gert Racioppi, Antonio |
| author_facet | Dimopoulos, Konstantinos Dioguardi, Christian Hütsi, Gert Racioppi, Antonio |
| contents | Palatini $F(R,X)$ gravity, with $X$ the inflaton kinetic term, proved to be a powerful framework for generating asymptotically flat inflaton potentials. Here we show that a quadratic Palatini $F(R,X)$ restores compatibility with the observational data of the Peebles-Vilenkin quintessential inflation model. Moreover, the same can be achieved with an exponential version of the Peebles-Vilenkin potential if embedded in a Palatini $F(R,X)$ of order higher than two. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_21610 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Quintessential Inflation in Palatini $F(R,X)$ gravity Dimopoulos, Konstantinos Dioguardi, Christian Hütsi, Gert Racioppi, Antonio General Relativity and Quantum Cosmology Cosmology and Nongalactic Astrophysics High Energy Physics - Phenomenology Palatini $F(R,X)$ gravity, with $X$ the inflaton kinetic term, proved to be a powerful framework for generating asymptotically flat inflaton potentials. Here we show that a quadratic Palatini $F(R,X)$ restores compatibility with the observational data of the Peebles-Vilenkin quintessential inflation model. Moreover, the same can be achieved with an exponential version of the Peebles-Vilenkin potential if embedded in a Palatini $F(R,X)$ of order higher than two. |
| title | Quintessential Inflation in Palatini $F(R,X)$ gravity |
| topic | General Relativity and Quantum Cosmology Cosmology and Nongalactic Astrophysics High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2503.21610 |