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Primordial Power Spectra from an Emergent Universe: Basic Results and Clarifications

Authors
  • martineau, killian
  • barrau, aurélien
Publication Date
Dec 18, 2018
Identifiers
DOI: 10.3390/universe4120149
OAI: oai:mdpi.com:/2218-1997/4/12/149/
Source
MDPI
Keywords
Language
English
License
Green
External links

Abstract

Emergent cosmological models, together with the Big Bang and bouncing scenarios, are among the possible descriptions of the early Universe. This work aims at clarifying some general features of the primordial tensor power spectrum in this specific framework. In particular, some naive beliefs are corrected. Using a toy model, we investigate the conditions required to produce a scale-invariant spectrum and show to what extent this spectrum can exhibit local features sensitive to the details of the scale factor evolution near the transition time.

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