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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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Main Authors: Duy H. Nguyen, Tuyen M. Pham, Tuan Q. Do
Format: Bài trích
Language:English
Published: The European Physical Journal C 2021
Online Access: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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spelling 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 8.893527

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