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Lyth bound of inflation with a tilt

Juan Garcia-Bellido, Diederik Roest, Marco Scalisi, Ivonne Zavala, Ivonne Zavala Carrasco Orcid Logo

Physical Review D, Volume: 90, Issue: 12

Swansea University Author: Ivonne Zavala Carrasco Orcid Logo

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DOI (Published version): 10.1103/PhysRevD.90.123539

Abstract

We provide strong evidence for universality of the inflationary field range: given an accurate measurement of (ns,r), one can infer Δϕ in a model-independent way in the sub-Planckian regime for a range of universality classes of inflationary models. Both the tensor-to-scalar ratio as well as the spe...

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Published in: Physical Review D
Published: 2014
URI: https://cronfa.swan.ac.uk/Record/cronfa21629
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first_indexed 2015-05-21T16:38:41Z
last_indexed 2019-08-09T15:03:46Z
id cronfa21629
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spelling 2019-08-08T10:58:22.7617701 v2 21629 2015-05-21 Lyth bound of inflation with a tilt 2fb8d4bb665e9a89d3b3478c17f646f8 0000-0002-5589-9928 Ivonne Zavala Carrasco Ivonne Zavala Carrasco true false 2015-05-21 SPH We provide strong evidence for universality of the inflationary field range: given an accurate measurement of (ns,r), one can infer Δϕ in a model-independent way in the sub-Planckian regime for a range of universality classes of inflationary models. Both the tensor-to-scalar ratio as well as the spectral tilt are essential for the field range. Given the Planck constraints on ns, the Lyth bound is strengthened by two orders of magnitude: whereas the original bound gives a sub-Planckian field range for r≲2⋅10−3, we find that n=0.96 brings this down to r≲2⋅10−5. Journal Article Physical Review D 90 12 29 12 2014 2014-12-29 10.1103/PhysRevD.90.123539 COLLEGE NANME Physics COLLEGE CODE SPH Swansea University 2019-08-08T10:58:22.7617701 2015-05-21T16:40:07.3983240 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics Juan Garcia-Bellido 1 Diederik Roest 2 Marco Scalisi 3 Ivonne Zavala 4 Ivonne Zavala Carrasco 0000-0002-5589-9928 5
title Lyth bound of inflation with a tilt
spellingShingle Lyth bound of inflation with a tilt
Ivonne Zavala Carrasco
title_short Lyth bound of inflation with a tilt
title_full Lyth bound of inflation with a tilt
title_fullStr Lyth bound of inflation with a tilt
title_full_unstemmed Lyth bound of inflation with a tilt
title_sort Lyth bound of inflation with a tilt
author_id_str_mv 2fb8d4bb665e9a89d3b3478c17f646f8
author_id_fullname_str_mv 2fb8d4bb665e9a89d3b3478c17f646f8_***_Ivonne Zavala Carrasco
author Ivonne Zavala Carrasco
author2 Juan Garcia-Bellido
Diederik Roest
Marco Scalisi
Ivonne Zavala
Ivonne Zavala Carrasco
format Journal article
container_title Physical Review D
container_volume 90
container_issue 12
publishDate 2014
institution Swansea University
doi_str_mv 10.1103/PhysRevD.90.123539
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 We provide strong evidence for universality of the inflationary field range: given an accurate measurement of (ns,r), one can infer Δϕ in a model-independent way in the sub-Planckian regime for a range of universality classes of inflationary models. Both the tensor-to-scalar ratio as well as the spectral tilt are essential for the field range. Given the Planck constraints on ns, the Lyth bound is strengthened by two orders of magnitude: whereas the original bound gives a sub-Planckian field range for r≲2⋅10−3, we find that n=0.96 brings this down to r≲2⋅10−5.
published_date 2014-12-29T03:25:40Z
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score 11.013731

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