Cosmological constant behavior in DBI theory

Changrim Ahn, Chanju Kim, Eric V. Linder

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18 Scopus citations

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 ≠ - 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.

Original languageEnglish
Pages (from-to)181-184
Number of pages4
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume684
Issue number4-5
DOIs
StatePublished - 15 Feb 2010

Bibliographical note

Funding Information:
This work has been supported by the World Class University grant R32-2008-000-10130-0 . C.K. has been supported in part by the NRF grant funded by MEST through CQUeST with grant No. 2005-0049409 . E.L. has been supported in part by the Director, Office of Science, Office of High Energy Physics, of the US Department of Energy under Contract No. DE-AC02-05CH11231 .

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