Signatures of Planck-scale interactions in the cosmic microwave background?
arXiv:gr-qc/0601108 · doi:10.1088/0264-9381/24/6/001
Abstract
Based on a rather general low-energy effective action (interacting quantum fields in classical curved space-times), we calculate potential signatures of new physics (such as quantum gravity) at ultra-high energies (presumably the Planck scale) in the anisotropies of the cosmic microwave background. These Planck-scale interactions create non-Gaussian contributions, where special emphasis is laid on the three-point function as the most promising observable, which also allows the discrimination between models violating and those obeying Lorentz invariance. PACS: 98.80.Cq, 04.62.+v, 98.70.Vc, 98.80.Qc.
arXiv comment4 pages
References in corpus (23)
- Non-Gaussian features of primordial fluctuations in single field inflationary models
- The Trans-Planckian Problem of Inflationary Cosmology
- Primordial non-gaussianities in single field inflation
- A note on inflation and transplanckian physics
- The Robustness of Inflation to Changes in Super-Planck-Scale Physics
- Primordial non-gaussianities from multiple-field inflation
- Inflation as a Probe of Short Distance Physics
- On non-gaussianities in single-field inflation
- Inflation with a Planck-scale frequency cutoff
- Perturbation spectrum in inflation with cutoff
- Mode Generating Mechanism in Inflation with Cutoff
- On the Dependence of the Spectra of Fluctuations in Inflationary Cosmology on Trans-Planckian Physics
- On Signatures of Short Distance Physics in the Cosmic Microwave Background
- Back-Reaction and the Trans-Planckian Problem of Inflation Revisited
- The Corley-Jacobson dispersion relation and trans-Planckian inflation
- Minimal modifications of the primordial power spectrum from an adiabatic short distance cutoff
- Minimum Length Cutoff in Inflation and Uniqueness of the Action
- Running of the Spectral Index and Violation of the Consistency Relation Between Tensor and Scalar Spectra from trans-Planckian Physics
- Dynamical zero-temperature phase transitions and cosmic inflation/deflation
- Trans-Planckian Physics and the Spectrum of Fluctuations in a Bouncing Universe
- On the Tensor/Scalar Ratio in Inflation with UV Cutoff
- Trans-Planckian corrections to the primordial spectrum in the infra-red and the ultra-violet
- Gauge-invariant perturbation theory for trans-Planckian inflation