Astronomy and Astrophysics – Astrophysics
Scientific paper
2002-02-05
Phys.Rev. D66 (2002) 023515
Astronomy and Astrophysics
Astrophysics
15 pages RevTeX file with figures incorporated. Slow-roll inflation module for use with the CAMB program can be found at htt
Scientific paper
10.1103/PhysRevD.66.023515
We consider approaches to cosmological parameter estimation in the inflationary cosmology, focussing on the required accuracy of the initial power spectra. Parametrizing the spectra, for example by power-laws, is well suited to testing the inflationary paradigm but will only correctly estimate cosmological parameters if the parametrization is sufficiently accurate, and we investigate conditions under which this is achieved both for present data and for upcoming satellite data. If inflation is favoured, reliable estimation of its physical parameters requires an alternative approach adopting its detailed predictions. For slow-roll inflation, we investigate the accuracy of the predicted spectra at first and second order in the slow-roll expansion (presenting the complete second-order corrections for the tensors for the first time). We find that within the presently-allowed parameter space, there are regions where it will be necessary to include second-order corrections to reach the accuracy requirements of MAP and Planck satellite data. We end by proposing a data analysis pipeline appropriate for testing inflation and for cosmological parameter estimation from high-precision data.
Leach Samuel M.
Liddle Andrew R.
Martin Jerome
Schwarz Dominik J.
No associations
LandOfFree
Cosmological parameter estimation and the inflationary cosmology 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 Cosmological parameter estimation and the inflationary cosmology, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cosmological parameter estimation and the inflationary cosmology will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-705512