Light dilaton in a metastable vacuum

Elander, Daniel; Piai, Maurizio; Roughley, John

doi:10.1103/physrevd.103.046009

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Light dilaton in a metastable vacuum

Daniel Elander, Maurizio Piai

, John Roughley

Physical Review D, Volume: 103, Issue: 4

Swansea University Authors: Maurizio Piai , John Roughley

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DOI (Published version): 10.1103/physrevd.103.046009

Abstract

We identify a parametrically light dilaton by studying the perturbations of metastable vacua along a branch of regular supergravity backgrounds that are dual to four-dimensional confining field theories. The branch includes also stable and unstable solutions. The former encompass, as a special case,...

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Published in:	Physical Review D
ISSN:	2470-0010 2470-0029
Published:	American Physical Society (APS) 2021
Online Access:	Check full text
URI:	https://cronfa.swan.ac.uk/Record/cronfa56147
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first_indexed	2021-01-29T08:30:19Z
last_indexed	2021-05-25T03:26:41Z
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spelling	2021-05-24T16:25:58.1423954 v2 56147 2021-01-29 Light dilaton in a metastable vacuum 3ce295f2c7cc318bac7da18f9989d8c3 0000-0002-2251-0111 Maurizio Piai Maurizio Piai true false a455f6e7908ee14413cb31e9f6f2f0fb John Roughley John Roughley true false 2021-01-29 SPH We identify a parametrically light dilaton by studying the perturbations of metastable vacua along a branch of regular supergravity backgrounds that are dual to four-dimensional confining field theories. The branch includes also stable and unstable solutions. The former encompass, as a special case, the geometry proposed by Witten as a holographic model of confinement. The latter approach a supersymmetric solution, by enhancing a condensate in the dual field theory. A phase transition separates the space of stable backgrounds from the metastable ones. In proximity of the phase transition, one of the lightest scalar states inherits some of the properties of the dilaton, despite not being particularly light. Journal Article Physical Review D 103 4 American Physical Society (APS) 2470-0010 2470-0029 12 4 2021 2021-04-12 10.1103/physrevd.103.046009 COLLEGE NANME Physics COLLEGE CODE SPH Swansea University 2021-05-24T16:25:58.1423954 2021-01-29T08:26:18.2836965 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics Daniel Elander 1 Maurizio Piai 0000-0002-2251-0111 2 John Roughley 3 56147__19993__a196aa7c69774f32a3093f1c6c113eb7.pdf 56147.pdf 2021-05-24T16:24:25.7809756 Output 477238 application/pdf Version of Record true Released under the terms of the Creative Commons Attribution 4.0 International license true eng https://creativecommons.org/licenses/by/4.0/
title	Light dilaton in a metastable vacuum
spellingShingle	Light dilaton in a metastable vacuum Maurizio Piai John Roughley
title_short	Light dilaton in a metastable vacuum
title_full	Light dilaton in a metastable vacuum
title_fullStr	Light dilaton in a metastable vacuum
title_full_unstemmed	Light dilaton in a metastable vacuum
title_sort	Light dilaton in a metastable vacuum
author_id_str_mv	3ce295f2c7cc318bac7da18f9989d8c3 a455f6e7908ee14413cb31e9f6f2f0fb
author_id_fullname_str_mv	3ce295f2c7cc318bac7da18f9989d8c3_*_Maurizio Piai a455f6e7908ee14413cb31e9f6f2f0fb_*_John Roughley
author	Maurizio Piai John Roughley
author2	Daniel Elander Maurizio Piai John Roughley
format	Journal article
container_title	Physical Review D
container_volume	103
container_issue	4
publishDate	2021
institution	Swansea University
issn	2470-0010 2470-0029
doi_str_mv	10.1103/physrevd.103.046009
publisher	American Physical Society (APS)
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department_str	School of Biosciences, Geography and Physics - Physics{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Physics
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description	We identify a parametrically light dilaton by studying the perturbations of metastable vacua along a branch of regular supergravity backgrounds that are dual to four-dimensional confining field theories. The branch includes also stable and unstable solutions. The former encompass, as a special case, the geometry proposed by Witten as a holographic model of confinement. The latter approach a supersymmetric solution, by enhancing a condensate in the dual field theory. A phase transition separates the space of stable backgrounds from the metastable ones. In proximity of the phase transition, one of the lightest scalar states inherits some of the properties of the dilaton, despite not being particularly light.
published_date	2021-04-12T04:10:53Z
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Light dilaton in a metastable vacuum

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