What happens when the inflaton stops during inflation

Seto, Osamu; Yokoyama, Jun'ichi; Kodama, Hideo

doi:10.1103/PhysRevD.61.103504

What happens when the inflaton stops during inflation

Osamu Seto
(
- Kyoto U., Yukawa Inst., Kyoto
)
,
Jun'ichi Yokoyama
(
- Cambridge U. and
- Osaka U.
)
,
Hideo Kodama
(
- Kyoto U., Yukawa Inst., Kyoto
)

Nov, 1999

13 pages

Published in:

Phys.Rev.D 61 (2000) 103504

e-Print:

astro-ph/9911119 [astro-ph]

DOI:

10.1103/PhysRevD.61.103504

Report number:

YITP-99-68,
NI99021-SFU,
OU-TAP-105

View in:

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Abstract: (arXiv)

The spectrum of adiabatic density perturbation generated during inflation is studied in the case the time derivative of an inflation-driving scalar field (inflaton) vanishes at some time during inflation. It is shown that the nondecaying mode of perturbation has a finite value even in this case and that its amplitude is given by the standard formula with the time derivation of the scalar field replaced by the potential gradient using the slow-roll equation.

inflation
density: perturbation
spectrum: perturbation
field theory: scalar
potential
field equations: solution

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Figures(0)

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