CMB angular power spectrum from correlated primordial fluctuation

Journal Article · Sun Feb 15 04:00:00 EST 2009 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.79.043015· OSTI ID:21259981

Yu, B; Lu, T ^[1]

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1. Department of Physics, Nanjing University, Nanjing 210093 (China)

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 cosmic microwave background angular power spectrum and find that its amplitude decreases but the decrease is different for different l. This feature can be used to constrain the correlation strength from the real data.

• OSTI ID: 21259981
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 4 Vol. 79; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

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AMPLITUDES
CORRELATIONS
FLUCTUATIONS
GAUSS FUNCTION
INFLATIONARY UNIVERSE
RANDOMNESS
RELICT RADIATION
SPECTRA