Transient Quintessence from Group Manifold Reductions or how all roads lead to Rome
We investigate the accelerating phases of cosmologies supported by a metric, scalars and a single exponential scalar potential. The different solutions can be represented by trajectories on a sphere and we find that quintessence happens within the "arctic circle" of the sphere. Furthermore...
| Main Authors: | , , , , |
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| Format: | Text |
| Language: | unknown |
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arXiv
2003
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.48550/arxiv.hep-th/0312102 https://arxiv.org/abs/hep-th/0312102 |
| Summary: | We investigate the accelerating phases of cosmologies supported by a metric, scalars and a single exponential scalar potential. The different solutions can be represented by trajectories on a sphere and we find that quintessence happens within the "arctic circle" of the sphere. Furthermore, we obtain multi-exponential potentials from 3D group manifold reductions of gravity, implying that such potentials can be embedded in gauged supergravities with an M-theory origin. We relate the double exponential case to flux compactifications on maximally symmetric spaces and S-branes. In the triple exponential case our analysis suggests the existence of two exotic S(D-3)-branes in D dimensions. : 31 pages, 4 figures, 5 tables. v2: minor corrections, references added. v3: references and minor clarifications added |
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