Anisotropic constant-roll inflation for the Dirac–Born–Infeld model
Abstract 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-insp...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2021-09-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-021-09652-1 |
| _version_ | 1818655546317733888 |
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| author | Duy H. Nguyen Tuyen M. Pham Tuan Q. Do |
| author_facet | Duy H. Nguyen Tuyen M. Pham Tuan Q. Do |
| author_sort | Duy H. Nguyen |
| collection | DOAJ |
| description | Abstract 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. |
| first_indexed | 2024-12-17T03:11:24Z |
| format | Article |
| id | doaj.art-a5a4290423f14868931ebb99b33f5ab6 |
| institution | Directory Open Access Journal |
| issn | 1434-6044 1434-6052 |
| language | English |
| last_indexed | 2024-12-17T03:11:24Z |
| publishDate | 2021-09-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-a5a4290423f14868931ebb99b33f5ab62022-12-21T22:05:50ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522021-09-0181911210.1140/epjc/s10052-021-09652-1Anisotropic constant-roll inflation for the Dirac–Born–Infeld modelDuy H. Nguyen0Tuyen M. Pham1Tuan Q. Do2Phenikaa Institute for Advanced Study, Phenikaa UniversityPhenikaa Institute for Advanced Study, Phenikaa UniversityPhenikaa Institute for Advanced Study, Phenikaa UniversityAbstract 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.https://doi.org/10.1140/epjc/s10052-021-09652-1 |
| spellingShingle | Duy H. Nguyen Tuyen M. Pham Tuan Q. Do Anisotropic constant-roll inflation for the Dirac–Born–Infeld model European Physical Journal C: Particles and Fields |
| title | 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_short | Anisotropic constant-roll inflation for the Dirac–Born–Infeld model |
| title_sort | anisotropic constant roll inflation for the dirac born infeld model |
| url | https://doi.org/10.1140/epjc/s10052-021-09652-1 |
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