Anisotropic constant-roll inflation for the Dirac–Born–Infeld model
In this paper, we study a non-canonical extension of a supergravity-motivated model acting as a vivid counterexample to the cosmic no-hair conjecture due to its unusual coupling between scalar and electromagnetic fields. In particular, a canonical scalar field is replaced by the string-inspired Dira...
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| Định dạng: | Bài trích |
| Ngôn ngữ: | English |
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The European Physical Journal C
2021
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| Truy cập trực tuyến: | https://link.springer.com/article/10.1140%2Fepjc%2Fs10052-021-09652-1 https://dlib.phenikaa-uni.edu.vn/handle/PNK/3297 https://doi.org/10.1140/epjc/s10052-021-09652-1 |
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oai:localhost:PNK-32972022-08-17T05:54:45Z Anisotropic constant-roll inflation for the Dirac–Born–Infeld model Duy H. Nguyen Tuyen M. Pham Tuan Q. Do In this paper, we study a non-canonical extension of a supergravity-motivated model acting as a vivid counterexample to the cosmic no-hair conjecture due to its unusual coupling between scalar and electromagnetic fields. In particular, a canonical scalar field is replaced by the string-inspired Dirac–Born–Infeld one in this extension. As a result, exact anisotropic inflationary solutions for this Dirac–Born–Infeld model are figured out under a constant-roll condition. Furthermore, numerical calculations are performed to verify that these anisotropic constant-roll solutions are indeed attractive during their inflationary phase. 2021-10-27T02:05:04Z 2021-10-27T02:05:04Z 2021 Bài trích https://link.springer.com/article/10.1140%2Fepjc%2Fs10052-021-09652-1 https://dlib.phenikaa-uni.edu.vn/handle/PNK/3297 https://doi.org/10.1140/epjc/s10052-021-09652-1 en The European Physical Journal C |
| institution |
Digital Phenikaa |
| collection |
Digital Phenikaa |
| language |
English |
| description |
In this paper, we study a non-canonical extension of a supergravity-motivated model acting as a vivid counterexample to the cosmic no-hair conjecture due to its unusual coupling between scalar and electromagnetic fields. In particular, a canonical scalar field is replaced by the string-inspired Dirac–Born–Infeld one in this extension. As a result, exact anisotropic inflationary solutions for this Dirac–Born–Infeld model are figured out under a constant-roll condition. Furthermore, numerical calculations are performed to verify that these anisotropic constant-roll solutions are indeed attractive during their inflationary phase. |
| format |
Bài trích |
| author |
Duy H. Nguyen Tuyen M. Pham Tuan Q. Do |
| spellingShingle |
Duy H. Nguyen Tuyen M. Pham Tuan Q. Do Anisotropic constant-roll inflation for the Dirac–Born–Infeld model |
| author_facet |
Duy H. Nguyen Tuyen M. Pham Tuan Q. Do |
| author_sort |
Duy H. Nguyen |
| title |
Anisotropic constant-roll inflation for the Dirac–Born–Infeld model |
| title_short |
Anisotropic constant-roll inflation for the Dirac–Born–Infeld model |
| title_full |
Anisotropic constant-roll inflation for the Dirac–Born–Infeld model |
| title_fullStr |
Anisotropic constant-roll inflation for the Dirac–Born–Infeld model |
| title_full_unstemmed |
Anisotropic constant-roll inflation for the Dirac–Born–Infeld model |
| title_sort |
anisotropic constant-roll inflation for the dirac–born–infeld model |
| publisher |
The European Physical Journal C |
| publishDate |
2021 |
| url |
https://link.springer.com/article/10.1140%2Fepjc%2Fs10052-021-09652-1 https://dlib.phenikaa-uni.edu.vn/handle/PNK/3297 https://doi.org/10.1140/epjc/s10052-021-09652-1 |
| _version_ |
1751856269375832064 |
| score |
8.89252 |