Confrontation of Double-Inflationary Models with Observations

Details Confrontation of Double-Inflationary Models with Observations Confrontation of Double-Inflationary Models with Observations

1994-03-17

arxiv.org/abs/astro-ph/9403037v1

Phys.Rev.D50:4827-4834,1994

Astronomy and Astrophysics

Astrophysics

15 pages LaTeX-REVTeX, 3 figures available upon request, DAMTP-R94/20, YITP/U-94-6

Scientific paper

10.1103/PhysRevD.50.4827

We consider double-inflationary models with two noninteracting scalar fields, a light scalar field $\phi_l$ with potential $\frac{1}{2}m_l^2\phi_l^2$ and a heavy scalar field $\phi_h$ with potential $\frac{\lambda}{n}\phi_h^n$ with $n=2,4$. CDM with the initial spectrum of adiabatic perturbations produced in these models is compared with observations. These models contain two more free parameters than the standard CDM model with an initial scale-invariant spectrum. We normalize our spectra to COBE DMR and compare the predictions with observations on the biasing factor, large-scale peculiar velocities, quasar and galaxy formation and the Stromlo-APM counts-in-cells analysis. The model with $n=4$ is excluded by the data while for the $n=2$ model, taking cosmic variance into account, a small window of parameters compatible with observations is found.

Affiliated with

Also associated with

No associations

Rating

Confrontation of Double-Inflationary Models with Observations does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Confrontation of Double-Inflationary Models with Observations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Confrontation of Double-Inflationary Models with Observations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-190475