Hyperbolic Inflation in the Jordan Frame
We consider a multi-scalar field model in the Jordan frame, which can be seen as a two-scalar field model where the Brans–Dicke field interacts in the kinetic part with the second scalar field. This theory under a conformal transformation reduces to the hyperbolic inflation. We show that scaling sol...
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| Fformat: | Erthygl |
| Iaith: | English |
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MDPI AG
2022-03-01
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| Cyfres: | Universe |
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| Mynediad Ar-lein: | https://www.mdpi.com/2218-1997/8/4/199 |
| _version_ | 1827619441194565632 |
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| author | Andronikos Paliathanasis |
| author_facet | Andronikos Paliathanasis |
| author_sort | Andronikos Paliathanasis |
| collection | DOAJ |
| description | We consider a multi-scalar field model in the Jordan frame, which can be seen as a two-scalar field model where the Brans–Dicke field interacts in the kinetic part with the second scalar field. This theory under a conformal transformation reduces to the hyperbolic inflation. We show that scaling solutions and the de Sitter universe are provided by the theory. In the study of asymptotic dynamics, we determine an attractor where all the fluid sources contribute in the cosmological fluid. This attractor is always a spiral, and it can be seen as the analogue of the hyperbolic inflation in the Jordan frame. |
| first_indexed | 2024-03-09T10:28:12Z |
| format | Article |
| id | doaj.art-6e8a14d7ed0544d2a201e89ddb51b5c0 |
| institution | Directory Open Access Journal |
| issn | 2218-1997 |
| language | English |
| last_indexed | 2024-03-09T10:28:12Z |
| publishDate | 2022-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Universe |
| spelling | doaj.art-6e8a14d7ed0544d2a201e89ddb51b5c02023-12-01T21:29:51ZengMDPI AGUniverse2218-19972022-03-018419910.3390/universe8040199Hyperbolic Inflation in the Jordan FrameAndronikos Paliathanasis0Institute of Systems Science, Durban University of Technology, P.O. Box 1334, Durban 4000, South AfricaWe consider a multi-scalar field model in the Jordan frame, which can be seen as a two-scalar field model where the Brans–Dicke field interacts in the kinetic part with the second scalar field. This theory under a conformal transformation reduces to the hyperbolic inflation. We show that scaling solutions and the de Sitter universe are provided by the theory. In the study of asymptotic dynamics, we determine an attractor where all the fluid sources contribute in the cosmological fluid. This attractor is always a spiral, and it can be seen as the analogue of the hyperbolic inflation in the Jordan frame.https://www.mdpi.com/2218-1997/8/4/199scalar fieldchiral modelhyperbolic inflationJordan frame |
| spellingShingle | Andronikos Paliathanasis Hyperbolic Inflation in the Jordan Frame Universe scalar field chiral model hyperbolic inflation Jordan frame |
| title | Hyperbolic Inflation in the Jordan Frame |
| title_full | Hyperbolic Inflation in the Jordan Frame |
| title_fullStr | Hyperbolic Inflation in the Jordan Frame |
| title_full_unstemmed | Hyperbolic Inflation in the Jordan Frame |
| title_short | Hyperbolic Inflation in the Jordan Frame |
| title_sort | hyperbolic inflation in the jordan frame |
| topic | scalar field chiral model hyperbolic inflation Jordan frame |
| url | https://www.mdpi.com/2218-1997/8/4/199 |
| work_keys_str_mv | AT andronikospaliathanasis hyperbolicinflationinthejordanframe |