Primordial Perturbations Spectra in a Holographic Phase
arXiv:gr-qc/0702071 · doi:10.1103/PhysRevD.76.043509
Abstract
In this paper, we suppose that the universe begins in a holographic thermal equilibrium phase with the diverged correlation length, and the phase transition to the radiation phase of standard cosmology goes with the abrupt reducing of correlation length. In this case, the primordial perturbations may be induced by thermal fluctuations in this holographic phase. We calculate the spectra of this holographic primordial perturbations, and find that the scalar spectrum has a slightly red tilt and the tensor perturbation amplitude has a moderate ratio, which may be tested in coming observations. The results plotted in r-n_s plane is similar to that of large field inflation models. However, for fixed efolding number, they are generally in different positions.
arXiv comment5 pages, 3 eps figures, to be published in PRD
References in corpus (15)
- The World as a Hologram
- Particle Physics Models of Inflation and the Cosmological Density Perturbation
- The Pre-Big Bang Scenario in String Cosmology
- How long before the end of inflation were observable perturbations produced?
- Bouncing Universes in String-inspired Gravity
- Producing a Scale-Invariant Spectrum of Perturbations in a Hagedorn Phase of String Cosmology
- Inflation model constraints from the Wilkinson Microwave Anisotropy Probe three-year data
- Tensor Modes from a Primordial Hagedorn Phase of String Cosmology
- Cosmic microwave background measurements can discriminate among inflation models
- Inflation models and observation
- Constraining Inflation with Cosmic Microwave Background Polarization
- On what scale should inflationary observables be constrained?
- More on the Spectrum of Perturbations in String Gas Cosmology
- On the new string theory inspired mechanism of generation of cosmological perturbations
- S-duality in String Gas Cosmology
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- Inflation in Entropic Cosmology: Primordial Perturbations and non-Gaussianities
- Entropic Force Scenarios and Eternal Inflation
- Cosmic Information, the Cosmological Constant and the Amplitude of primordial perturbations
- On Primordial Density Perturbation and Decaying Speed of Sound
- Thermal non-Gaussianity in holographic cosmology