A Small Cosmological Constant, Grand Unification and Warped Geometry
arXiv:hep-th/0006226 · doi:10.1016/j.nuclphysb.2006.04.034
Abstract
We explore a mechanism to obtain the observational small value for the 4-dimensional vacuum energy through an exponential warp-factor suppression. Intriguingly the required suppression scale relates directly to the GUT scale. We demonstrate the mechanism explicitly in a 5-dimensional brane-world setup with warped geometry. Upon lifting the setup to 10-dimensional IIB string-theory, the relevance of the GUT scale becomes clear as the IIB string-theory description, which is based on D3-brane stacks, gives rise to a spontaneously broken SU(5) supersymmetric GUT theory with low-energy MSSM spectrum and Higgs doublet-triplet splitting.
38 pages, 11 figures, various minor corrections and references added
References in corpus (32)
- The Cosmological Constant
- Quantization of Four-form Fluxes and Dynamical Neutralization of the Cosmological Constant
- D-Branes at Singularities : A Bottom-Up Approach to the String Embedding of the Standard Model
- A Small Cosmological Constant from a Large Extra Dimension
- Self-tuning flat domain walls in 5d gravity and string theory
- A D-brane alternative to unification
- Saltatory Relaxation of the Cosmological Constant
- A Comment on Self-Tuning and Vanishing Cosmological Constant in the Brane World
- Neutrino mass spectrum and neutrinoless double beta decay
- The Cosmological Constant Problem from a Brane-World Perspective
- Selftuning and its footprints
- The Cosmological Constant From The Viewpoint Of String Theory
- Anti-deSitter Vacua of Gauged Supergravities with 8 Supercharges
- Supersymmetric Domain-Wall World from D=5 Simple Gauged Supergravity
- Supersymmetry and the Brane World
- A Note on Warped String Compactification
- Brane World Sum Rules
- A Brane World Solution to the Cosmological Constant Problem
- Brane World Scenarios and the Cosmological Constant
- A Naturally Small Cosmological Constant on the Brane?
- Localized (Super)Gravity and Cosmological Constant
- AdS_5 and the 4D Cosmological Constant
- A symmetry for vanishing cosmological constant in an extra dimensional toy model
- A Small Cosmological Constant and Backreaction of Non-Finetuned Parameters
- Domain Walls and Massive Gauged Supergravity Potentials
- Bulk Supersymmetry and Brane Cosmological Constant
- Micrometer Gravitinos and the Cosmological Constant
- Supersymmetric Grandunification: An Update
- Brane Worlds, the Cosmological Constant and String Theory
- Self-T-Dual Brane Cosmology and the Cosmological Constant Problem
- The Cosmological Constant in Brane Cosmology
- A self-tuning mechanism in 6d string theory
Cited by in corpus (16)
- Four-dimensional String Compactifications with D-Branes, Orientifolds and Fluxes
- Intersecting Brane Worlds -- A Path to the Standard Model ?
- M-Theory Inflation from Multi M5-Brane Dynamics
- De Sitter Vacua from Heterotic M-Theory
- G-Fluxes and Non-Perturbative Stabilisation of Heterotic M-Theory
- Enlarging the Parameter Space of Heterotic M-Theory Flux Compactifications to Phenomenological Viability
- Yukawa Couplings in Heterotic Standard Models
- Intersecting Branes Flip SU(5)
- A Small Cosmological Constant and Backreaction of Non-Finetuned Parameters
- Flipped SU(5) From D-branes With Type IIB Fluxes
- Moduli Dependent mu-Terms in a Heterotic Standard Model
- Heterotic Standard Model Moduli
- Ghost Cosmology: Exact Solutions, Transitions Between Standard Cosmologies and Ghost Dark Energy/Matter Evolution
- S-Track Stabilization of Heterotic de Sitter Vacua
- Supersymmetry Breaking with Zero Vacuum Energy in M-Theory Flux Compactifications
- Towards Dark Energy from String-Theory