New vacuum stability limit from cosmological history
The stability of the electroweak vacuum imposes important constraints on new physics models. Such new physics models may introduce one or more new thermal phases with a lower free energy than that of the electroweak vacuum. In this case, the early universe may stay or have already evolved into one o...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2024-05-01
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| Series: | Nuclear Physics B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0550321324000993 |
| _version_ | 1797214893774995456 |
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| author | Csaba Balázs Yang Xiao Jin Min Yang Yang Zhang |
| author_facet | Csaba Balázs Yang Xiao Jin Min Yang Yang Zhang |
| author_sort | Csaba Balázs |
| collection | DOAJ |
| description | The stability of the electroweak vacuum imposes important constraints on new physics models. Such new physics models may introduce one or more new thermal phases with a lower free energy than that of the electroweak vacuum. In this case, the early universe may stay or have already evolved into one of these deeper vacuum states. We investigate this possibility in detail in the singlet extension of the Standard Model, and delineate the corresponding constraints in its parameter space. We also discuss the situation in supersymmetry as another example. To account for the possibility that the universe is trapped in a non-electroweak vacuum, we propose a procedure of calculating the vacuum stability limit efficiently. |
| first_indexed | 2024-04-24T11:21:25Z |
| format | Article |
| id | doaj.art-63138ae61a0944908a8012ff4e2daca9 |
| institution | Directory Open Access Journal |
| issn | 0550-3213 |
| language | English |
| last_indexed | 2024-04-24T11:21:25Z |
| publishDate | 2024-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Physics B |
| spelling | doaj.art-63138ae61a0944908a8012ff4e2daca92024-04-11T04:40:49ZengElsevierNuclear Physics B0550-32132024-05-011002116533New vacuum stability limit from cosmological historyCsaba Balázs0Yang Xiao1Jin Min Yang2Yang Zhang3School of Physics and Astronomy, Monash University, Melbourne, 3800, Victoria, AustraliaCAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing, 100190, PR China; School of Physical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, PR China; Corresponding author at: CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing, 100190, PR China.CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing, 100190, PR China; School of Physical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, PR ChinaSchool of Physics, Zhengzhou University, Zhengzhou, 450001, Henan, PR China; Corresponding author.The stability of the electroweak vacuum imposes important constraints on new physics models. Such new physics models may introduce one or more new thermal phases with a lower free energy than that of the electroweak vacuum. In this case, the early universe may stay or have already evolved into one of these deeper vacuum states. We investigate this possibility in detail in the singlet extension of the Standard Model, and delineate the corresponding constraints in its parameter space. We also discuss the situation in supersymmetry as another example. To account for the possibility that the universe is trapped in a non-electroweak vacuum, we propose a procedure of calculating the vacuum stability limit efficiently.http://www.sciencedirect.com/science/article/pii/S0550321324000993 |
| spellingShingle | Csaba Balázs Yang Xiao Jin Min Yang Yang Zhang New vacuum stability limit from cosmological history Nuclear Physics B |
| title | New vacuum stability limit from cosmological history |
| title_full | New vacuum stability limit from cosmological history |
| title_fullStr | New vacuum stability limit from cosmological history |
| title_full_unstemmed | New vacuum stability limit from cosmological history |
| title_short | New vacuum stability limit from cosmological history |
| title_sort | new vacuum stability limit from cosmological history |
| url | http://www.sciencedirect.com/science/article/pii/S0550321324000993 |
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