Τίτλος:
Features of the inflaton potential and the power spectrum of
cosmological perturbations
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
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.
Συγγραφείς:
Kefala, K.
Kodaxis, G. P.
Stamou, I. D.
Tetradis, N.
Περιοδικό:
Physical Review D
Εκδότης:
AMER PHYSICAL SOC
DOI:
10.1103/PhysRevD.104.023506
