Published December 15, 2005
| public
Journal Article
Open
Generation of density perturbations at the end of inflation
- Creators
- Salem, Michael P.
Abstract
Recently a mechanism was proposed whereby the primordial density perturbations are generated at the end of inflation. We continue the analysis of the proposed model of this mechanism and calculate the maximum extent to which the density perturbations produced via this model can dominate over those of the standard inflationary paradigm. In addition, we provide a straightforward variation of this model which allows for greater amplification of the density perturbations. Finally, we show that a variation in the implementation of the original model results in significant non-Gaussianities in the resulting spectrum of density perturbations. The level of non-Gaussianities can be made to saturate the current observational bound.
Additional Information
©2005 The American Physical Society (Received 16 November 2005; published 22 December 2005) M. S. thanks Michael Graesser and Mark Wise for helpful discussions and thanks Michael Graesser for useful comments upon his review of the manuscript. M. S. also thanks David Lyth for correcting an assumption made in an earlier report of this work and for other helpful comments. This work was supported by the U.S. Department of Energy under Contract No. DE-FG03-92ER40701.Files
SALprd05.pdf
Files
(108.9 kB)
| Name | Size | Download all |
|---|---|---|
|
md5:f13b72ec05b7aac523e74dfacee60f37
|
108.9 kB | Preview Download |
Additional details
- Eprint ID
- 1975
- Resolver ID
- CaltechAUTHORS:SALprd05
- Created
-
2006-02-28Created from EPrint's datestamp field
- Updated
-
2021-11-08Created from EPrint's last_modified field