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Inflationary scenario from higher curvature warped spacetime
We consider a five dimensional AdS spacetime, in presence of higher curvature
term like in the bulk, in the context of
Randall-Sundrum two-brane model. Our universe is identified with the TeV scale
brane and emerges as a four dimensional effective theory. From the perspective
of this effective theory, we examine the possibility of "inflationary scenario"
by considering the on-brane metric ansatz as an FRW one. Our results reveal
that the higher curvature term in the five dimensional bulk spacetime generates
a potential term for the radion field. Due to the presence of radion potential,
the very early universe undergoes a stage of accelerated expansion and moreover
the accelerating period of the universe terminates in a finite time. We also
find the spectral index of curvature perturbation () and tensor to scalar
ratio () in the present context, which match with the observational results
based on the observations of .Comment: 10 pages, 5 figures. arXiv admin note: text overlap with
arXiv:1701.0157
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