Emergent universe revisited through the CSL theory

Abstract In this work we analyze how the spectrum of primordial scalar perturbations is modified, within the emergent universe scenario, when a particular version of the Continuous Spontaneous Localization (CSL) model is incorporated as the generating mechanism of initial perturbations, providing al...

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Autores principales:	Gabriel R. Bengochea, María Pía Piccirilli, Gabriel León
Formato:	article
Lenguaje:	EN
Publicado:	SpringerOpen 2021
Materias:	Astrophysics QB460-466 Nuclear and particle physics. Atomic energy. Radioactivity QC770-798
Acceso en línea:	https://doaj.org/article/636fed59119044e08181afb88056806d
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id	oai:doaj.org-article:636fed59119044e08181afb88056806d
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spelling	oai:doaj.org-article:636fed59119044e08181afb88056806d2021-12-05T12:09:18ZEmergent universe revisited through the CSL theory10.1140/epjc/s10052-021-09842-x1434-60441434-6052https://doaj.org/article/636fed59119044e08181afb88056806d2021-12-01T00:00:00Zhttps://doi.org/10.1140/epjc/s10052-021-09842-xhttps://doaj.org/toc/1434-6044https://doaj.org/toc/1434-6052Abstract In this work we analyze how the spectrum of primordial scalar perturbations is modified, within the emergent universe scenario, when a particular version of the Continuous Spontaneous Localization (CSL) model is incorporated as the generating mechanism of initial perturbations, providing also an explanation to the quantum-to-classical transition of such perturbations. On the other hand, a phase of super-inflation, prior to slow-roll inflation, is a characteristic feature of the emergent universe hypothesis. In recent works, it was shown that the super-inflation phase could generically induce a suppression of the temperature anisotropies of the CMB at large angular scales. We study here under what conditions the CSL maintains or modifies these characteristics of the emergent universe and their compatibility with the CMB observations.Gabriel R. BengocheaMaría Pía PiccirilliGabriel LeónSpringerOpenarticleAstrophysicsQB460-466Nuclear and particle physics. Atomic energy. RadioactivityQC770-798ENEuropean Physical Journal C: Particles and Fields, Vol 81, Iss 12, Pp 1-16 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Astrophysics QB460-466 Nuclear and particle physics. Atomic energy. Radioactivity QC770-798
spellingShingle	Astrophysics QB460-466 Nuclear and particle physics. Atomic energy. Radioactivity QC770-798 Gabriel R. Bengochea María Pía Piccirilli Gabriel León Emergent universe revisited through the CSL theory
description	Abstract In this work we analyze how the spectrum of primordial scalar perturbations is modified, within the emergent universe scenario, when a particular version of the Continuous Spontaneous Localization (CSL) model is incorporated as the generating mechanism of initial perturbations, providing also an explanation to the quantum-to-classical transition of such perturbations. On the other hand, a phase of super-inflation, prior to slow-roll inflation, is a characteristic feature of the emergent universe hypothesis. In recent works, it was shown that the super-inflation phase could generically induce a suppression of the temperature anisotropies of the CMB at large angular scales. We study here under what conditions the CSL maintains or modifies these characteristics of the emergent universe and their compatibility with the CMB observations.
format	article
author	Gabriel R. Bengochea María Pía Piccirilli Gabriel León
author_facet	Gabriel R. Bengochea María Pía Piccirilli Gabriel León
author_sort	Gabriel R. Bengochea
title	Emergent universe revisited through the CSL theory
title_short	Emergent universe revisited through the CSL theory
title_full	Emergent universe revisited through the CSL theory
title_fullStr	Emergent universe revisited through the CSL theory
title_full_unstemmed	Emergent universe revisited through the CSL theory
title_sort	emergent universe revisited through the csl theory
publisher	SpringerOpen
publishDate	2021
url	https://doaj.org/article/636fed59119044e08181afb88056806d
work_keys_str_mv	AT gabrielrbengochea emergentuniverserevisitedthroughthecsltheory AT mariapiapiccirilli emergentuniverserevisitedthroughthecsltheory AT gabrielleon emergentuniverserevisitedthroughthecsltheory
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Emergent universe revisited through the CSL theory

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