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- Title
Bridging geometries and potentials in DBI cosmologies.
- Authors
Luis Chimento; Ruth Lazkoz
- Abstract
Abstract  We investigate the link between the warp function and the potential in Dirac-Born-Infeld (DBI) power-law cosmologies. We give a prescription to take advantage of the fact that there is always a choice of potential resulting in a constant ratio between pressure and energy density for a given a warp factor. We illustrate the method with several examples, and complete the investigation by showing how symmetries can be used to generate new DBI solutions from existing ones.
- Subjects
GEOMETRY; METAPHYSICAL cosmology; DIRAC equation; DENSITY; SYMMETRY (Physics); GRAVITATION
- Publication
General Relativity & Gravitation, 2008, Vol 40, Issue 12, p2543
- ISSN
0001-7701
- Publication type
Article
- DOI
10.1007/s10714-008-0637-1