@article{3029950,
    title = "Features of the inflaton potential and the power spectrum of
cosmological perturbations",
    author = "Kefala, K. and Kodaxis, G. P. and Stamou, I. D. and Tetradis, N.",
    journal = "Physical Review D",
    year = "2021",
    volume = "104",
    number = "2",
    publisher = "AMER PHYSICAL SOC",
    issn = "2470-0010, 2470-0029",
    doi = "10.1103/PhysRevD.104.023506",
    abstract = "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."
}