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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2405.06031 |
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| _version_ | 1866911976465104896 |
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| author | Campbell, Mariam Daniel, Richard Dunsby, Peter K. S. van de Bruck, Carsten |
| author_facet | Campbell, Mariam Daniel, Richard Dunsby, Peter K. S. van de Bruck, Carsten |
| contents | We perform a detailed dynamical system analysis for the behaviour of a Dirac-Born-Infeld (DBI) field in a spatially closed Friedmann-Lemaître-Robertson-Walker (FLRW) cosmology. The DBI field is characterised by a potential and brane tension. We study power-law or exponential functions for the potential and tension. We find that in a spatially closed FLRW cosmology, a DBI field in the ultra-relativistic limit allows for a broader range of initial conditions resulting in a bouncing universe than in the non-relativistic limit. We further note that the range of initial conditions allowing for a bounce is larger if we consider power-law functions for the potential and tension, compared to the exponential case. Our dynamical analysis shows that a DBI field does not exhibit stable cyclical behaviour, including the case in which a negative cosmological constant is present. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_06031 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Bouncing cosmologies in the presence of a Dirac-Born-Infeld field Campbell, Mariam Daniel, Richard Dunsby, Peter K. S. van de Bruck, Carsten General Relativity and Quantum Cosmology We perform a detailed dynamical system analysis for the behaviour of a Dirac-Born-Infeld (DBI) field in a spatially closed Friedmann-Lemaître-Robertson-Walker (FLRW) cosmology. The DBI field is characterised by a potential and brane tension. We study power-law or exponential functions for the potential and tension. We find that in a spatially closed FLRW cosmology, a DBI field in the ultra-relativistic limit allows for a broader range of initial conditions resulting in a bouncing universe than in the non-relativistic limit. We further note that the range of initial conditions allowing for a bounce is larger if we consider power-law functions for the potential and tension, compared to the exponential case. Our dynamical analysis shows that a DBI field does not exhibit stable cyclical behaviour, including the case in which a negative cosmological constant is present. |
| title | Bouncing cosmologies in the presence of a Dirac-Born-Infeld field |
| topic | General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2405.06031 |