Cosmological Constant Behavior in DBI Theory

Abstract

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.

4 pages, 2 figures

References in corpus (4)

• Improved Cosmological Constraints from New, Old and Combined Supernova Datasets
• DBI-essence
• Field Flows of Dark Energy
• Bridging geometries and potentials in DBI cosmologies

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• Geometrical diagnostic for purely kinetic k-essence dark energy
• Dark D-Brane Cosmology: from background evolution to cosmological perturbations
• Assessing the foundation and applicability of some dark energy fluid models in the Dirac-Born-Infeld framework
• Constraining Models of Dark Energy
• The growth of DM and DE perturbations in DBI non-canonical scalar field scenario
• DBI analog of a decaying vacuum cosmology
• Cosmic evolution of scalar fields with multiple vacua: generalized DBI and quintessence
• Bouncing cosmologies in the presence of a Dirac-Born-Infeld field