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Effects of the speed of sound at large N

Ivonne Zavala, Ivonne Zavala Carrasco Orcid Logo

Physical Review D, Volume: 91, Issue: 6

Swansea University Author: Ivonne Zavala Carrasco Orcid Logo

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DOI (Published version): 10.1103/PhysRevD.91.063005

Abstract

The implications of a smaller than unity speed of sound of the scalar perturbations during cosmic inflation is studied in terms of a model independent large-N approach. We show that the (ns,r) plane is non-trivially degenerated when the effects of a different than one speed of sound cs are taken int...

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Published in: Physical Review D
Published: 2015
URI: https://cronfa.swan.ac.uk/Record/cronfa21616
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first_indexed 2015-05-21T16:38:41Z
last_indexed 2019-05-31T22:14:09Z
id cronfa21616
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spelling 2019-05-30T15:40:39.2458389 v2 21616 2015-05-21 Effects of the speed of sound at large N 2fb8d4bb665e9a89d3b3478c17f646f8 0000-0002-5589-9928 Ivonne Zavala Carrasco Ivonne Zavala Carrasco true false 2015-05-21 SPH The implications of a smaller than unity speed of sound of the scalar perturbations during cosmic inflation is studied in terms of a model independent large-N approach. We show that the (ns,r) plane is non-trivially degenerated when the effects of a different than one speed of sound cs are taken into account. We also discuss the degeneracies due to cs in the running of the spectral index, αs. We use the bounds on cs to constrain such degeneracies. Journal Article Physical Review D 91 6 13 3 2015 2015-03-13 10.1103/PhysRevD.91.063005 COLLEGE NANME Physics COLLEGE CODE SPH Swansea University 2019-05-30T15:40:39.2458389 2015-05-21T16:39:04.9827240 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics Ivonne Zavala 1 Ivonne Zavala Carrasco 0000-0002-5589-9928 2
title Effects of the speed of sound at large N
spellingShingle Effects of the speed of sound at large N
Ivonne Zavala Carrasco
title_short Effects of the speed of sound at large N
title_full Effects of the speed of sound at large N
title_fullStr Effects of the speed of sound at large N
title_full_unstemmed Effects of the speed of sound at large N
title_sort Effects of the speed of sound at large N
author_id_str_mv 2fb8d4bb665e9a89d3b3478c17f646f8
author_id_fullname_str_mv 2fb8d4bb665e9a89d3b3478c17f646f8_***_Ivonne Zavala Carrasco
author Ivonne Zavala Carrasco
author2 Ivonne Zavala
Ivonne Zavala Carrasco
format Journal article
container_title Physical Review D
container_volume 91
container_issue 6
publishDate 2015
institution Swansea University
doi_str_mv 10.1103/PhysRevD.91.063005
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Physics{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Physics
document_store_str 0
active_str 0
description The implications of a smaller than unity speed of sound of the scalar perturbations during cosmic inflation is studied in terms of a model independent large-N approach. We show that the (ns,r) plane is non-trivially degenerated when the effects of a different than one speed of sound cs are taken into account. We also discuss the degeneracies due to cs in the running of the spectral index, αs. We use the bounds on cs to constrain such degeneracies.
published_date 2015-03-13T03:25:40Z
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score 11.014291

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