Self-Tuning Dark Energy in Brane World Cosmology

Abstract

Recently, the self-tuning mechanism of cancellation of vacuum energy has been proposed in which our universe is a flat 3-brane in a 5-dimensional spacetime. In this letter, the self-tuning mechanism of dark energy is proposed by considering the cosmological matter in the brane world. In our model, the bulk scalar field takes the role of the dark energy and its value is slowly varying in time. The claim is that even if the enormous amount of vacuum energy exists on the brane we can adjust the present value of the dark energy to be consistent with the current observations. In this self-tuning mechanism, the existence of the constant of integration associated with the bulk scalar is crucial.

11pages, LaTex

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Cited by in corpus (10)

• The Cosmological Constant and Dark Energy
• WMAP constraints on low redshift evolution of dark energy
• Observational constraints on low redshift evolution of dark energy: How consistent are different observations?
• Brane World Effective Action at Low Energies and AdS/CFT Correspondence
• Scalar Field Dark Energy Perturbations and their Scale Dependence
• Cosmology with Radion and Bulk Scalar Field in Two Branes Model
• Low Energy Effective Action for Dilatonic Braneworld --A Formalism for Inflationary Braneworld--
• Understanding the origin of CMB constraints on Dark Energy
• Evolution of perturbations in distinct classes of canonical scalar field models of dark energy
• Evolution of Dark Energy Perturbations for Slotheon Field and Power Spectrum