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| Autores principales: | , , |
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| Formato: | Preprint |
| Publicado: |
2022
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| Acceso en línea: | https://arxiv.org/abs/2205.05532 |
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| _version_ | 1866910710746841088 |
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| author | Sarkar, Payel Ashmita Das, Prasanta Kumar |
| author_facet | Sarkar, Payel Ashmita Das, Prasanta Kumar |
| contents | We use the PLANCK 2018 and the WMAP data to constraint inflation models driven by a scalar field $ϕ$ in the presence of the non-minimal scalar-curvature mixing term $\frac{1}{2}ξR ϕ^2$. We consider four distinct scalar field potentials $ϕ^p e^{-λϕ},~(1 - ϕ^{p})e^{-λϕ},~(1-λϕ)^p$ and $\frac{αϕ^2}{1+αϕ^2}$ to study inflation in the non-minimal gravity theory. We calculate the potential slow-roll parameters and predict the scalar spectral index $n_s$ and the tensor-to-scalar ratio $r$, in the parameters ($λ, p, α$) space of the potentials. We have compared our results with the ones existing in the literature, and this indicates the present status of non-minimal inflation after the release of the PLANCK 2018 data. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2205_05532 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Non-Minimal Inflation with a scalar-curvature mixing term $\frac{1}{2} ξR ϕ^2$ Sarkar, Payel Ashmita Das, Prasanta Kumar Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Phenomenology We use the PLANCK 2018 and the WMAP data to constraint inflation models driven by a scalar field $ϕ$ in the presence of the non-minimal scalar-curvature mixing term $\frac{1}{2}ξR ϕ^2$. We consider four distinct scalar field potentials $ϕ^p e^{-λϕ},~(1 - ϕ^{p})e^{-λϕ},~(1-λϕ)^p$ and $\frac{αϕ^2}{1+αϕ^2}$ to study inflation in the non-minimal gravity theory. We calculate the potential slow-roll parameters and predict the scalar spectral index $n_s$ and the tensor-to-scalar ratio $r$, in the parameters ($λ, p, α$) space of the potentials. We have compared our results with the ones existing in the literature, and this indicates the present status of non-minimal inflation after the release of the PLANCK 2018 data. |
| title | Non-Minimal Inflation with a scalar-curvature mixing term $\frac{1}{2} ξR ϕ^2$ |
| topic | Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2205.05532 |