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Inflationary perturbations from a potential with a step

Feb, 2001

6 pages

Published in:

Phys.Rev.D 64 (2001) 123514

e-Print:

astro-ph/0102236 [astro-ph]

DOI:

10.1103/PhysRevD.64.123514

Report number:

CU-TP-1005

View in:

ADS Abstract Service

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Abstract: (APS)

We use a numerical code to compute the density perturbations generated during an inflationary epoch which includes a spontaneous symmetry breaking phase transition. A sharp step in the inflaton potential generates k dependent oscillations in the spectrum of primordial density perturbations. The amplitude and extent in wave number of these oscillations depends on both the magnitude and gradient of the step in the inflaton potential. We show that observations of the cosmic microwave background anisotropy place strong constraints on the step parameters.

inflation
density: perturbation
spectrum: oscillation
inflaton: potential
numerical calculations

References(22)

Figures(0)

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