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Non-minimally assisted chaotic inflation
Conventional wisdom says that a chaotic inflation model with a power-law potential is ruled out by the recent Planck-BICEP/Keck results. We find, however, that the model can be assisted by a non-minimally coupled scalar field and still provides a successful inflation. Considering a power-law chaotic...
| Autores principales: | , , , |
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| Lenguaje: | eng |
| Publicado: |
2022
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1088/1475-7516/2022/05/045 http://cds.cern.ch/record/2804329 |
| _version_ | 1780972850446860288 |
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| author | Hyun, Sang Chul Kim, Jinsu Park, Seong Chan Takahashi, Tomo |
| author_facet | Hyun, Sang Chul Kim, Jinsu Park, Seong Chan Takahashi, Tomo |
| author_sort | Hyun, Sang Chul |
| collection | CERN |
| description | Conventional wisdom says that a chaotic inflation model with a power-law potential is ruled out by the recent Planck-BICEP/Keck results. We find, however, that the model can be assisted by a non-minimally coupled scalar field and still provides a successful inflation. Considering a power-law chaotic inflation model of the type V ∼ φn with n = {2, 4/3, 1, 2/3, 1/3}, we show that n = 1/3 (n = {2/3, 1/3}) may be revived with the help of the quadratic (quartic) non-minimal coupling of the assistant field to gravity. |
| id | cern-2804329 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2022 |
| record_format | invenio |
| spelling | cern-28043292023-06-29T03:43:11Zdoi:10.1088/1475-7516/2022/05/045http://cds.cern.ch/record/2804329engHyun, Sang ChulKim, JinsuPark, Seong ChanTakahashi, TomoNon-minimally assisted chaotic inflationgr-qcGeneral Relativity and Cosmologyastro-ph.COAstrophysics and AstronomyConventional wisdom says that a chaotic inflation model with a power-law potential is ruled out by the recent Planck-BICEP/Keck results. We find, however, that the model can be assisted by a non-minimally coupled scalar field and still provides a successful inflation. Considering a power-law chaotic inflation model of the type V ∼ φn with n = {2, 4/3, 1, 2/3, 1/3}, we show that n = 1/3 (n = {2/3, 1/3}) may be revived with the help of the quadratic (quartic) non-minimal coupling of the assistant field to gravity.Conventional wisdom says that a chaotic inflation model with a power-law potential is ruled out by the recent Planck-BICEP/Keck results. We find, however, that the model can be assisted by a non-minimally coupled scalar field and still provides a successful inflation. Considering a power-law chaotic inflation model of the type $V\sim \varphi^n$ with $n=\{2, 4/3, 1, 2/3, 1/3\}$, we show that $n=1/3$ ($n=\{2/3, 1/3\}$) may be revived with the help of the quadratic (quartic) non-minimal coupling of the assistant field to gravity.arXiv:2203.09201YHEP-COS22-01KIAS-P22015CERN-TH-2022-040oai:cds.cern.ch:28043292022-03-17 |
| spellingShingle | gr-qc General Relativity and Cosmology astro-ph.CO Astrophysics and Astronomy Hyun, Sang Chul Kim, Jinsu Park, Seong Chan Takahashi, Tomo Non-minimally assisted chaotic inflation |
| title | Non-minimally assisted chaotic inflation |
| title_full | Non-minimally assisted chaotic inflation |
| title_fullStr | Non-minimally assisted chaotic inflation |
| title_full_unstemmed | Non-minimally assisted chaotic inflation |
| title_short | Non-minimally assisted chaotic inflation |
| title_sort | non-minimally assisted chaotic inflation |
| topic | gr-qc General Relativity and Cosmology astro-ph.CO Astrophysics and Astronomy |
| url | https://dx.doi.org/10.1088/1475-7516/2022/05/045 http://cds.cern.ch/record/2804329 |
| work_keys_str_mv | AT hyunsangchul nonminimallyassistedchaoticinflation AT kimjinsu nonminimallyassistedchaoticinflation AT parkseongchan nonminimallyassistedchaoticinflation AT takahashitomo nonminimallyassistedchaoticinflation |