Non-Minimal Inflation with a scalar-curvature mixing term $\frac{1}{2} ξR ϕ^2$

Payel Sarkar; Ashmita; Prasanta Kumar Das

doi:10.1016/j.aop.2023.169340

paper

Non-Minimal Inflation with a scalar-curvature mixing term $\frac{1}{2} ξ R ϕ^{2}$

arXiv:2205.05532 · doi:10.1016/j.aop.2023.169340

Abstract

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 $\frac{1}{2} ξ R ϕ^{2}$ . We consider four distinct scalar field potentials $ϕ^{p} e^{- λ ϕ}, (1 - ϕ^{p}) e^{- λ ϕ}, (1 - λ ϕ)^{p}$ and $\frac{α ϕ ^{2}}{1 + α ϕ ^{2}}$ 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.

arXiv comment19 pages, 3 figures, 6 tables

References in corpus (32)

Cited by in corpus (1)

Constructing Viable Interacting Dark Matter and Dark Energy Models: A Dynamical Systems Approach

Non-Minimal Inflation with a scalar-curvature mixing term 21​ξRϕ2

Abstract

References in corpus (32)

Cited by in corpus (1)

Non-Minimal Inflation with a scalar-curvature mixing term $\frac{1}{2} ξ R ϕ^{2}$