Reconstruction of the primordial power spectrum from CMB data

Guo Z-K, Schwarz D, Zhang Y-Z (2011)
JCAP 2011(08).

Journal Article | Published | English

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Measuring the deviation from scale invariance of the primordial power spectrum is a critical test of inflation. In this paper we reconstruct the shape of the primordial power spectrum of curvature perturbations from the cosmic microwave background data, including the 7-year Wilkinson Microwave Anisotropy Probe data and the Atacama Cosmology Telescope 148 GHz data, by using a binning method of a cubic spline interpolation in log-log space. We find that the power-law spectrum is a good fit to the data and that the Harrison-Zel'dovich spectrum is disfavored at 95% confidence level. If tensor modes are considered, we find no convincing deviations from the power-law spectrum.
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Guo Z-K, Schwarz D, Zhang Y-Z. Reconstruction of the primordial power spectrum from CMB data. JCAP. 2011;2011(08).
Guo, Z. - K., Schwarz, D., & Zhang, Y. - Z. (2011). Reconstruction of the primordial power spectrum from CMB data. JCAP, 2011(08).
Guo, Z. - K., Schwarz, D., and Zhang, Y. - Z. (2011). Reconstruction of the primordial power spectrum from CMB data. JCAP 2011.
Guo, Z.-K., Schwarz, D., & Zhang, Y.-Z., 2011. Reconstruction of the primordial power spectrum from CMB data. JCAP, 2011(08).
Z.-K. Guo, D. Schwarz, and Y.-Z. Zhang, “Reconstruction of the primordial power spectrum from CMB data”, JCAP, vol. 2011, 2011.
Guo, Z.-K., Schwarz, D., Zhang, Y.-Z.: Reconstruction of the primordial power spectrum from CMB data. JCAP. 2011, (2011).
Guo, Zong-Kuan, Schwarz, Dominik, and Zhang, Yuan-Zhong. “Reconstruction of the primordial power spectrum from CMB data”. JCAP 2011.08 (2011).
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