Ekpyrotic Nongaussianity : A Review
Author
Source
Issue
Vol. 2010, Issue 2010 (31 Dec. 2010), pp.1-19, 19 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2010-07-19
Country of Publication
Egypt
No. of Pages
19
Main Subjects
Abstract EN
Ekpyrotic models and their cyclic extensions solve the standard cosmological flatness, horizon, and homogeneity puzzles by postulating a slowly contracting phase of the universe prior to the big bang.
This ekpyrotic phase also manages to produce a nearly scale-invariant spectrum of scalar density fluctuations but, crucially, with significant nongaussian corrections.
In fact, some versions of ekpyrosis are on the borderline of being ruled out by observations, while, interestingly, the best-motivated models predict levels of nongaussianity that will be measurable by near-future experiments.
Here, we review these predictions in detail, and comment on their implications.
American Psychological Association (APA)
Lehners, Jean-Luc. 2010. Ekpyrotic Nongaussianity : A Review. Advances in Astronomy،Vol. 2010, no. 2010, pp.1-19.
https://search.emarefa.net/detail/BIM-506775
Modern Language Association (MLA)
Lehners, Jean-Luc. Ekpyrotic Nongaussianity : A Review. Advances in Astronomy No. 2010 (2010), pp.1-19.
https://search.emarefa.net/detail/BIM-506775
American Medical Association (AMA)
Lehners, Jean-Luc. Ekpyrotic Nongaussianity : A Review. Advances in Astronomy. 2010. Vol. 2010, no. 2010, pp.1-19.
https://search.emarefa.net/detail/BIM-506775
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-506775