Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-09-24
Astronomy and Astrophysics
Astrophysics
5 pages, 4 figures
Scientific paper
In numerical calculations of the primordial power spectrum of perturbations produced during inflation, for very little wavenumber $k$s, to implement the initial conditions required of the perturbation mode functions consistently, we must let the universe experience more e-foldings of inflation than that required of it to solve the horizon, flatness and other pre-inflation problems. However, if the number of e-foldings of inflation has an upper bound, then for perturbations at scales greater than some critical value, the initial conditions required of the mode functions cannot be implemented physically. Because at the inflation beginning point, these perturbation modes lie outside the horizon. We propose that such perturbations do not contribute to the Cosmological Microwave Background Anisotropy (CMBA). Under this proposition, the exceptional lowness of the observed little $l$ muli-poles of CMBA is reproduced numerically. In Linde's $\phi^2$ model, the upper bound on the number of e-foldings of inflation is determined to be 65 approximately.
Gao Yi-hong
Zeng Ding-fang
No associations
LandOfFree
Primordial Power Spectrum's Calculation and the Upper Bound on the Number of E-foldings of Inflation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Primordial Power Spectrum's Calculation and the Upper Bound on the Number of E-foldings of Inflation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Primordial Power Spectrum's Calculation and the Upper Bound on the Number of E-foldings of Inflation will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-694376