TY - JOUR
A2 - Asselmeyer-Maluga, Torsten
AU - Kousar, Farzana
AU - Saleem, Rabia
AU - Zubair, M.
PY - 2018
DA - 2018/12/16
TI - Inflation in Gravity with Exponential Model
SP - 3085761
VL - 2018
AB - We are taking action of f(R) gravity with a nonminimal coupling to a massive inflaton field. A f(R,ϕ) model is chosen which leads to the scalar-tensor theory which can be transformed to Einstein frame by conformal transformation. To avoid the vagueness of the frame dependence, we evaluate the exact analytical solutions for inflationary era in Jordan frame and find a condition for graceful exit from inflation. Furthermore, we calculate the perturbed parameters (i.e., number of e-folds, slow-roll parameters, scalar and tensor power spectra, corresponding spectral indices, and tensor to scalar ratio). It is showed that the tensor power spectra lead to blue tilt for this model. The trajectories of the perturbed parameters are plotted to compare the results with recent observations.
SN - 1687-7357
UR - https://doi.org/10.1155/2018/3085761
DO - 10.1155/2018/3085761
JF - Advances in High Energy Physics
PB - Hindawi
KW -
ER -