For a quartic f(R) inflation model, two solutions predict tensor-to-scalar ratios around 0.0005 to 0.0015, which are consistent with Planck and BICEP/Keck bounds but below current detection limits.
The inflationary scenario in the $f(R)$ gravity model with a $R^4$ term
1 Pith paper cite this work. Polarity classification is still indexing.
1
Pith paper citing it
abstract
We investigate the cosmic inflation scenario of a specific $f(R)$ model that contains more than one higher-order term in $R$. The $f(R)$ considered here has the terms $R^2$, $R^3$, and $R^4$ along with the linear term. A rigorous investigation has been carried out in the presence of these higher-order terms to figure out whether it leads to a physically sensible cosmic inflationary model. We examine in detail, subject to which conditions this $f(R)$ model renders a viable inflationary scenario, and it has been found that the outcomes of our study agree well with the recent PLANCK results.
citation-role summary
background 1
citation-polarity summary
fields
gr-qc 1years
2024 1verdicts
REJECT 1roles
background 1polarities
background 1representative citing papers
citing papers explorer
-
Inflationary observables in $F(R)$ gravity
For a quartic f(R) inflation model, two solutions predict tensor-to-scalar ratios around 0.0005 to 0.0015, which are consistent with Planck and BICEP/Keck bounds but below current detection limits.