Cosmological Constant Behavior in DBI Theory

Details Cosmological Constant Behavior in DBI Theory Cosmological Constant Behavior in DBI Theory

2009-04-21

arxiv.org/abs/0904.3328v1

Phys. Lett. B684:181-184,2010

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

4 pages, 2 figures

Scientific paper

10.1016/j.physletb.2009.12.069

Cosmological constant behavior can be realized as solutions of the Dirac-Born-Infeld (DBI) action within Type IIB string theory and the AdS/CFT correspondence. We derive a family of attractor solutions to the cosmological constant that arise purely from the "relativistic" nature of the DBI action without an explicit false vacuum energy. We also find attractor solutions with values of the equation of state near but with $w\ne-1$; the forms for the potential arising from flux interactions are renormalizable and natural, and the D3-brane tension can be given by the standard throat form. We discuss present and future observational constraints on the theory.

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