Electroweak vacuum stability and inflation via nonminimal derivative couplings to gravity

We show that the standard model vacuum can be stabilized if all particle propagators are nonminimally coupled to gravity. This is due to a Higgs-background dependent redefinition of the standard model fields: in terms of canonical variables and in the large Higgs field limit, the quantum fluctuation...

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Autores: Vita, Stefano Di, Germani, Cristiano
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2016
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/128248
Acceso en línea:https://hdl.handle.net/2445/128248
Access Level:acceso abierto
Palabra clave:Cosmologia
Gravetat
Cosmology
Gravity
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spelling Electroweak vacuum stability and inflation via nonminimal derivative couplings to gravityVita, Stefano DiGermani, CristianoCosmologiaGravetatCosmologyGravityWe show that the standard model vacuum can be stabilized if all particle propagators are nonminimally coupled to gravity. This is due to a Higgs-background dependent redefinition of the standard model fields: in terms of canonical variables and in the large Higgs field limit, the quantum fluctuations of the redefined fields are suppressed by the Higgs background. Thus, in this regime, quantum corrections to the tree-level electroweak potential are negligible. Finally, we show that in this framework the Higgs boson can be responsible for inflation. Due to a numerical coincidence that originates from the CMB data, inflation can happen if the Higgs boson mass, the top mass, and the QCD coupling lie in a region of the parameter space approximately equivalent than the one allowing for electroweak vacuum stability in the standard Model. We find some (small) regions in the standard model parameter space in which the new interaction "rescues" the electroweak vacuum, which would not be stable in the standard model.American Physical Society2019201920162019info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion9 p.application/pdfapplication/pdfhttps://hdl.handle.net/2445/128248Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció del document publicat a: https://doi.org/10.1103/PhysRevD.93.045005Physical Review D, 2016, vol. 93, num. 4https://doi.org/10.1103/PhysRevD.93.045005(c) American Physical Society, 2016info:eu-repo/semantics/openAccessoai:recercat.cat:2445/1282482026-05-29T05:05:01Z
dc.title.none.fl_str_mv Electroweak vacuum stability and inflation via nonminimal derivative couplings to gravity
title Electroweak vacuum stability and inflation via nonminimal derivative couplings to gravity
spellingShingle Electroweak vacuum stability and inflation via nonminimal derivative couplings to gravity
Vita, Stefano Di
Cosmologia
Gravetat
Cosmology
Gravity
title_short Electroweak vacuum stability and inflation via nonminimal derivative couplings to gravity
title_full Electroweak vacuum stability and inflation via nonminimal derivative couplings to gravity
title_fullStr Electroweak vacuum stability and inflation via nonminimal derivative couplings to gravity
title_full_unstemmed Electroweak vacuum stability and inflation via nonminimal derivative couplings to gravity
title_sort Electroweak vacuum stability and inflation via nonminimal derivative couplings to gravity
dc.creator.none.fl_str_mv Vita, Stefano Di
Germani, Cristiano
author Vita, Stefano Di
author_facet Vita, Stefano Di
Germani, Cristiano
author_role author
author2 Germani, Cristiano
author2_role author
dc.subject.none.fl_str_mv Cosmologia
Gravetat
Cosmology
Gravity
topic Cosmologia
Gravetat
Cosmology
Gravity
description We show that the standard model vacuum can be stabilized if all particle propagators are nonminimally coupled to gravity. This is due to a Higgs-background dependent redefinition of the standard model fields: in terms of canonical variables and in the large Higgs field limit, the quantum fluctuations of the redefined fields are suppressed by the Higgs background. Thus, in this regime, quantum corrections to the tree-level electroweak potential are negligible. Finally, we show that in this framework the Higgs boson can be responsible for inflation. Due to a numerical coincidence that originates from the CMB data, inflation can happen if the Higgs boson mass, the top mass, and the QCD coupling lie in a region of the parameter space approximately equivalent than the one allowing for electroweak vacuum stability in the standard Model. We find some (small) regions in the standard model parameter space in which the new interaction "rescues" the electroweak vacuum, which would not be stable in the standard model.
publishDate 2016
dc.date.none.fl_str_mv 2016
2019
2019
2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/128248
url https://hdl.handle.net/2445/128248
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.93.045005
Physical Review D, 2016, vol. 93, num. 4
https://doi.org/10.1103/PhysRevD.93.045005
dc.rights.none.fl_str_mv (c) American Physical Society, 2016
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) American Physical Society, 2016
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 9 p.
application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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