Structure formation with two periods of inflation : beyond PLaln Lambda CDM

Show full item record



Permalink

http://hdl.handle.net/10138/325659

Citation

Enqvist , K , Sawala , T & Takahashi , T 2020 , ' Structure formation with two periods of inflation : beyond PLaln Lambda CDM ' , Journal of Cosmology and Astroparticle Physics , no. 10 , 053 . https://doi.org/10.1088/1475-7516/2020/10/053

Title: Structure formation with two periods of inflation : beyond PLaln Lambda CDM
Author: Enqvist, Kari; Sawala, Till; Takahashi, Tomo
Other contributor: University of Helsinki, Department of Physics
University of Helsinki, Department of Physics


Date: 2020-10
Language: eng
Number of pages: 19
Belongs to series: Journal of Cosmology and Astroparticle Physics
ISSN: 1475-7516
DOI: https://doi.org/10.1088/1475-7516/2020/10/053
URI: http://hdl.handle.net/10138/325659
Abstract: We discuss structure formation in models with a spectator field in small-field inflation which accommodate a secondary period of inflation. In such models, subgalactic scale primordial fluctuations can be much suppressed in comparison to the usual power-law Lambda CDM model while the large scale fluctuations remain consistent with current observations. We discuss how a secondary inflationary epoch may give rise to observable features in the small scale power spectrum and hence be tested by the structures in the Local Universe.
Subject: inflation
physics of the early universe
power spectrum
DARK
PERTURBATIONS
SIMULATIONS
GALAXIES
BIG
115 Astronomy, Space science
Rights:


Files in this item

Total number of downloads: Loading...

Files Size Format View
Enqvist_2020_J. ... ropart._Phys._2020_053.pdf 1.009Mb PDF View/Open

This item appears in the following Collection(s)

Show full item record