CMB Angular Power Spectrum from Correlated Primordial Fluctuation
arXiv:0902.2448 · doi:10.1103/PhysRevD.79.043015
Abstract
The usual inflationary scenario predicts a Gaussian random primordial density fluctuation, different Fourier modes of which do not correlate with each other. In this paper we propose a correlation between these different modes. A simple case is that these different Fourier modes correlate with each other following a Gaussian function. For such a primordial density fluctuation we calculate the CMB angular power spectrum and find that its amplitude decreases but the decrease is different for different . This feature can be used to constrain the the correlation strength from the real data.
accepted by PRD, 5 pages, 6 figures
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