RT info:eu-repo/semantics/article
T1 General slow-roll Inflation in f(R) gravity under the Palatini approach
A1 Bekov, Sabit
A1 Myrzakulov, Kairat
A1 Myrzakulov, Ratbay
A1 Saez Gómez, Diego
K1 Inflación
K1 Gravitation
K1 2101 Cosmología y Cosmogonía
AB Slow-roll inflation is analyzed in the context of modified gravity within the Palatini formalism. As shown in the literature, inflation in this framework requires the presence of non-traceless matter; otherwise, it does not occur just as a consequence of the nonlinear gravitational terms of the action. Nevertheless, by including a single scalar field that plays the role of the inflaton, slow-roll inflation can be performed in these theories, where the equations lead to an effective potential that modifies the dynamics. We obtain the general slow-roll parameters and analyze a simple model to illustrate the differences introduced by the gravitational terms under the Palatini approach, and the modifications on the spectral index and the tensor to scalar ratio predicted by the model.
PB MDPI
SN 2073-8994
YR 2020
FD 2020
LK https://uvadoc.uva.es/handle/10324/58839
UL https://uvadoc.uva.es/handle/10324/58839
LA eng
NO Symmetry,  2020, Vol. 12, Nº. 12, 1958
NO Producción Científica
DS UVaDOC
RD 10-abr-2025