Power Spectra in Spacetime Noncommutative Inflation
arXiv:astro-ph/0311378 · doi:10.1016/j.nuclphysb.2005.02.002
Abstract
String/M theory inspires an uncertainty relation between space and time which deviates from general relativity. It is possible to explore this deviation from cosmological observations, in particular from the CMB fluctuation spectrum. This paper extends some previous observations to more general inflation schemes, we find that the noncommutative spacetime effects always suppress the power spectrum, of both the scalar and tensor perturbations, and may provide a large enough running of the spectral index to fit the WMAP data in the inflation model.
19 pages, 6 figures, harvmac; 2 references added; only references added; Accepted for publication in Nucl. Phys. B
References in corpus (10)
- Observational Constraints on Cosmic String Production During Brane Inflation
- Initial Conditions for Inflation
- Effects of the Sound Speed of Quintessence on the Microwave Background and Large Scale Structure
- Cosmological Perturbations from a New-Physics Hypersurface
- CMB Power Spectrum from Noncommutative Spacetime
- Initial state effects on the cosmic microwave background and trans-planckian physics
- Inflation with a running spectral index in supergravity
- Noncommutative Inflation and the CMB Multipoles
- Can MAP and Planck map Planck physics?
- Holographic bounds on the UV cutoff scale in inflationary cosmology
Cited by in corpus (50)
- Inflation after WMAP3: Confronting the Slow-Roll and Exact Power Spectra with CMB Data
- Features and New Physical Scales in Primordial Observables: Theory and Observation
- A CMB/Dark Energy Cosmic Duality
- Noncommutative Geometry and Cosmology
- Initial state of matter fields and trans-Planckian physics: Can CMB observations disentangle the two?
- Running of the Spectral Index and Violation of the Consistency Relation Between Tensor and Scalar Spectra from trans-Planckian Physics
- Inflationary universe in loop quantum cosmology
- Inflationary Potential Reconstruction for a WMAP Running Power Spectrum
- Noncommutative Conformally Coupled Scalar Field Cosmology and its Commutative Counterpart
- A Matrix Model for Misner Universe and Closed String Tachyons
- Strong Planck constraints on braneworld and non-commutative inflation
- A Note on Curvature Fluctuation of Noncommutative Inflation
- Running Spectral Index as a Probe of Physics at High Scales
- Probing Noncommutativity with Inflationary Gravitational Waves
- Anisotropic constant-roll inflation with noncommutative model and swampland conjectures
- Noncommutivity and Scalar Field Cosmology
- Effects of space-time noncommutativity on the angular power spectrum of the CMB
- Winding String Condensation and Noncommutative Deformation of Spacelike Singularity
- Inflationary Universe in Deformed Phase Space Scenario
- Noncommutative Black-Body Radiation: Implications On Cosmic Microwave Background
- Planck scale inflationary spectra from quantum gravity
- Noncommutative Geometry Inspired Entropic Inflation
- Black-Body Radiation Of Noncommutative Gauge Fields
- Noncommutative cosmological models coupled to a perfect fluid and a cosmological constant
- Generalized Space-time Noncommutative Inflation
- A Note on Noncommutative Brane Inflation
- Noncommutative chaotic inflation and WMAP three year results
- Is Noncommutative Eternal Inflation Possible?
- Noncommutative KKLMMT Model
- Running Spectral Index in Noncommutative Inflation and WMAP Three Year Results
- Inflation and the semiclassical dynamics of a conformal scalar field
- Reexamination of inflation in noncommutative space-time after Planck results
- Running of Running of the Spectral Index and WMAP Three-year data
- Nonminimal Inflation and the Running Spectral Index
- WKB-type Approximation to Noncommutative Quantum Cosmology
- The Measure for the Multiverse and the Probability for Inflation
- Gauss-Bonnet braneworld and WMAP three year results
- Flow equations in generalized braneworld scenarios
- Observational Consequences of Quantum Cosmology
- Complete noncommutativity in a cosmological model with radiation
- Hawking-Moss Tunneling in Noncommutative Eternal Inflation
- Non-Commutativity, Teleology and GRB Time Delay
- A general condition of inflationary cosmology on trans-Planckian physics
- A mechanism of the large-scale damping in the CMB anisotropy
- Slow-roll reconstruction for running spectral index
- Hints of (trans-Planckian) asymptotic freedom in semiclassical cosmology
- K-Inflation in Noncommutative Space-Time
- Strict deformations of quantum field theory in de Sitter spacetime
- Probing the primordial Universe from the low-multipole CMB data
- Exploring trans-Planckian physics and the curvature effect by primordial power spectrum with WMAP five-year data