TY - JOUR
TI - Features of the inflaton potential and the power spectrum of
cosmological perturbations
AU - Kefala, K.
AU - Kodaxis, G. P.
AU - Stamou, I. D.
AU - Tetradis, N.
JO - Physical Review D
PY - 2021
VL - 104
TODO - 2
SP - null
PB - AMER PHYSICAL SOC
SN - 2470-0010, 2470-0029
TODO - 10.1103/PhysRevD.104.023506
TODO - null
TODO - We discuss features of the inflaton potential that can lead to a strong
enhancement of the power spectrum of curvature perturbations. We show
that a steep steplike feature induces an enhancement of the spectrum by
several orders of magnitude within a certain range of scales. It also
produces a distinctive oscillatory pattern. We study the origin of the
oscillations and the additive effect of several steps. We analyze a
simplified potential, with an ad hoc introduction of steps at certain
field values, but also discuss the possible application to supergravity
models.
ER -