Observing the Geometry of Warped Compactification via Cosmic Inflation
arXiv:hep-th/0610151 · doi:10.1103/PhysRevLett.98.051301
Abstract
Using DBI inflation as an example, we demonstrate that the detailed geometry of warped compactification can leave an imprint on the cosmic microwave background (CMB). We compute CMB observables for DBI inflation in a generic class of warped throats and find that the results (such as the sign of the tilt of the scalar perturbations and its running) depend sensitively on the precise shape of the warp factor. In particular, we analyze the warped deformed conifold and find that the results can differ from those of other warped geometries, even when these geometries approximate well the exact metric of the warped deformed conifold.
arXiv comment4 pages, 3 figures. v2: References and clarifications added
References in corpus (33)
- A Large Mass Hierarchy from a Small Extra Dimension
- de Sitter Vacua in String Theory
- Hierarchies from Fluxes in String Compactifications
- Supergravity and a Confining Gauge Theory: Duality Cascades and SB-Resolution of Naked Singularities
- Towards Inflation in String Theory
- DBI in the Sky
- CFT's From Calabi-Yau Four-folds
- Brane Inflation
- M Theory, Orientifolds and G-Flux
- What would we learn by detecting a gravitational wave signal in the cosmic microwave background anisotropy?
- Scalar Speed Limits and Cosmology: Acceleration from D-cceleration
- Gravity Duals of Supersymmetric SU(N) x SU(N+M) Gauge Theories
- The Inflationary Brane-Antibrane Universe
- Moduli Stabilization from Fluxes in a Simple IIB Orientifold
- RR Flux on Calabi-Yau and Partial Supersymmetry Breaking
- On the Vacuum Structure of Type II String Compactifications on Calabi-Yau Spaces with H-Fluxes
- On D3-brane Potentials in Compactifications with Fluxes and Wrapped D-branes
- Loop Corrections to Volume Moduli and Inflation in String Theory
- Inflation from Warped Space
- Multi-Throat Brane Inflation
- The Baryonic Branch of Klebanov-Strassler Solution: a Supersymmetric Family of SU(3) Structure Backgrounds
- Warped Compactifications in M and F Theory
- Supersymmetry Breaking, M-Theory and Fluxes
- On the Moduli Space of the Cascading SU(M+p)xSU(p) Gauge Theory
- Reheating the Universe after String Theory Inflation
- Observing Brane Inflation
- Warped Reheating in Brane-Antibrane Inflation
- Stringy Effects During Inflation and Reheating
- Rolling Tachyon in Brane World Cosmology from Superstring Field Theory
- Cascading RG Flows from New Sasaki-Einstein Manifolds
- DBI Inflation in the Tip Region of a Warped Throat
- Warped Reheating in Multi-Throat Brane Inflation
- Heating in Brane Inflation and Hidden Dark Matter
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- The Effective Field Theory of Inflation
- Primordial Non-Gaussianities from Inflation Models
- A Microscopic Limit on Gravitational Waves from D-brane Inflation
- Phenomenology of D-Brane Inflation with General Speed of Sound
- Spinflation
- Comparing Infrared Dirac-Born-Infeld Brane Inflation to Observations
- Nongaussianity from Tachyonic Preheating in Hybrid Inflation
- Warped Supersymmetry Breaking
- Multifield DBI Inflation and Non-Gaussianities
- Large Nongaussianity from Nonlocal Inflation
- Gravitational Wave Constraints on DBI Inflation
- Primordial Trispectrum from Entropy Perturbations in Multifield DBI Model
- Fractional Brane State in the Early Universe
- IR Inflation from Multiple Branes
- Extended Effective Field Theory of Inflation
- Probing the Geometry of Warped String Compactifications at the LHC
- Cosmology of the Tachyon in Brane Inflation
- Brane Inflation is Attractive
- Systematics of multi-field effects at the end of warped brane inflation
- DBI N-flation
- Fine-Tuning in DBI Inflationary Mechanism
- DBI Inflation using a One-Parameter Family of Throat Geometries
- Inflation on an Open Racetrack
- Phenomenology of Infrared Smooth Warped Extra Dimensions
- Inflation in DBI models with constant gamma
- Graviton modes in multiply warped geometry
- New DBI Inflation model with Kinetic Coupling to Einstein Gravity
- The Measure for the Multiverse and the Probability for Inflation
- Application of Kaluza-Klein Theory in Modeling Compact Stars: Exploring Extra Dimensions
- Higher rank antisymmetric tensor fields in Klebanov-Strassler geometry