A First Glimpse of String Theory in the Sky?
arXiv:hep-ph/0405218 · doi:10.1103/PhysRevD.71.123504
Abstract
We propose a new method for identifying new physics imprints on present observational data in cosmology whereby signatures of string theory are clearly distinguished from imprints of possible features on the inflaton potential. Our method relies on the cross-correlations spectra of cosmic shear from large scale structure (LSS) with the CMB temperature anisotropies and E-mode polarization, by using the following properties: inflationary cosmology provides only one source term for all CMB spectra and LSS which highly constrains any deviations from the standard predictions; string theory can add new non-inflationary channels to the source of perturbations as well as modify clustering properties at large scales. Discrepancies in the source terms of correlations and clustering properties provide the evidence for new physics. Models of single-field inflation with a feature are disfavored even with present data. Upcoming WMAP results and future data from weak lensing of LSS will further improve our ability to probe new physics in this manner and could open the first direct window to string theory.
arXiv comment14 pages, 7 figures, Revtex, typos corrected and references added
References in corpus (62)
- Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
- Measurements of Omega and Lambda from 42 High-Redshift Supernovae
- First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
- A Large Mass Hierarchy from a Small Extra Dimension
- An Alternative to Compactification
- First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Preliminary Maps and Basic Results
- Cosmological parameters from SDSS and WMAP
- 4D Gravity on a Brane in 5D Minkowski Space
- Final Results from the Hubble Space Telescope Key Project to Measure the Hubble Constant
- Discovery of a Supernova Explosion at Half the Age of the Universe and its Cosmological Implications
- A Line of Sight Approach to Cosmic Microwave Background Anisotropies
- Cosmological Perturbation Theory in the Synchronous and Conformal Newtonian Gauges
- Cosmological Perturbation Theory in the Synchronous vs. Conformal Newtonian Gauge
- The 3D power spectrum of galaxies from the SDSS
- Measurements of the Cosmological Parameters Omega and Lambda from the First 7 Supernovae at z >= 0.35
- Quintessence and the Rest of the World
- First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Implications for Inflation
- Accelerated Universe from Gravity Leaking to Extra Dimensions
- Brane Inflation
- First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Angular Power Spectrum
- Brane-world gravity
- Constraints on Cosmological Models from Hubble Space Telescope Observations of High-z Supernovae
- A high resolution foreground cleaned CMB map from WMAP
- The significance of the largest scale CMB fluctuations in WMAP
- First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Parameter Estimation Methodology
- A new mechanism for generating density perturbations from inflation
- Cardassian Expansion: a Model in which the Universe is Flat, Matter Dominated, and Accelerating
- Suppressing the lower Multipoles in the CMB Anisotropies
- A Small Cosmological Constant from a Large Extra Dimension
- Opening up extra dimensions at ultra-large scales
- Self-tuning flat domain walls in 5d gravity and string theory
- Inflationary perturbations from a potential with a step
- Probing Newton's Constant on Vast Scales: DGP Gravity, Cosmic Acceleration and Large Scale Structure
- Inflation as a Probe of Short Distance Physics
- Perturbation spectrum in inflation with cutoff
- Gravitational Leakage into Extra Dimensions: Probing Dark Energy Using Local Gravity
- Supernovae, CMB, and Gravitational Leakage into Extra Dimensions
- Imprints of Short Distance Physics On Inflationary Cosmology
- Does the small CMB quadrupole moment suggest new physics?
- The m->0 limit for massive graviton in dS_4 and AdS_4. How to circumvent the van Dam-Veltman-Zakharov discontinuity
- A Maximum Likelihood Analysis of the Low CMB Multipoles from WMAP
- Cosmological perturbations and short distance physics from Noncommutative Geometry
- Some Aspects of Brane Inflation
- Getting Around Cosmic Variance
- The 2dF Galaxy Redshift Survey: Final Data Release
- Fluid Interpretation of Cardassian Expansion
- WMAP data and the curvature of space
- Future Type Ia Supernova Data as Tests of Dark Energy from Modified Friedmann Equations
- Cosmological String Gas on Orbifolds
- Trans-Planckian Particle Creation in Cosmology and Ultra-High Energy Cosmic Rays
- Modified Dispersion Relations from Closed Strings in Toroidal Cosmology
- What Can WMAP Tell Us About The Very Early Universe? New Physics as an Explanation of Suppressed Large Scale Power and Running Spectral Index
- Generalized Cardassian Expansion: Models in Which the Universe is Flat, Matter Dominated, and Accelerating
- Spectral Dependence of CMB Polarization and Parity
- Analysis of the Kamionkowski-Loeb method of reducing cosmic variance with CMB polarization
- Can Planck-scale physics be seen in the cosmic microwave background ?
- Can we live in a self-tuning universe?
- CMB Polarization towards Clusters as a Probe of the Integrated Sachs-Wolfe Effect
- SN1A data and the CMB of Modified Curvature at short and long distances
- Can Cosmic Shear Shed Light on Low Cosmic Microwave Background Multipoles?
- Polarization Signal of Distant Clusters and Reconstruction of Primordial Potential Fluctuations
- Short distance signatures in Cosmology: Why not in Black Holes?
Cited by in corpus (19)
- CMB multipole measurements in the presence of foregrounds
- Stringy Effects During Inflation and Reheating
- Decoupling in an expanding universe: backreaction barely constrains short distance effects in the CMB
- Reconstruction of the primordial power spectrum of curvature perturbations using multiple data sets
- Chaplygin inspired Inflation
- Band-power reconstruction of the primordial fluctuation spectrum by the maximum likelihood reconstruction method
- Universal Correction to the Inflationary Vacuum
- 'Tilting' the Universe with the Landscape Multiverse: The 'Dark' Flow
- Dark energy and dark matter from cosmological observations
- Reconstruction of the primordial fluctuation spectrum from the five-year WMAP data by the cosmic inversion method with band-power decorrelation analysis
- Do We Have Evidence for New Physics in the Sky?
- Cosmological Avatars of the Landscape II: CMB and LSS Signatures
- Why the Universe Started from a Low Entropy State
- Supernova Constraints on Models of Neutrino Dark Energy
- Extracting New Physics from the CMB
- The local dust foregrounds in the microwave sky: I. Thermal emission spectra
- Searching For Integrated Sachs-Wolfe Effect Beyond Temperature Anisotropies: CMB E-mode Polarization-Galaxy Cross Correlation
- Effect of the length of inflation on angular TT and TE power spectra in power-law inflation
- Short Distance Physics and Initial State Effects on the CMB Power Spectrum