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Bridging geometries and potentials in DBI cosmologies

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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.

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Authors and Affiliations

  1. Departamento de Física, Universidad de Buenos Aires, 1428, Buenos Aires, Argentina

    Luis P. Chimento

  2. Fisika Teorikoa, Zientzia eta Teknologia Fakultatea, Euskal Herriko Unibertsitatea, 644 Posta Kutxatila, 48080, Bilbao, Spain

    Ruth Lazkoz

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  1. Luis P. Chimento
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  2. Ruth Lazkoz
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Correspondence to Ruth Lazkoz.

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Chimento, L.P., Lazkoz, R. Bridging geometries and potentials in DBI cosmologies. Gen Relativ Gravit 40, 2543–2555 (2008). https://doi.org/10.1007/s10714-008-0637-1

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  • DOI: https://doi.org/10.1007/s10714-008-0637-1

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