Mathematics – Logic
Scientific paper
Oct 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010acasn..51..336d&link_type=abstract
Acta Astronomica Sinica, vol. 51, no. 4, p. 336-340
Mathematics
Logic
Cosmology: Observations, Cosmic Background Radiation, Large-Scale Structure Of Universe
Scientific paper
Based on the comparison between the WMAP (Wilkinson Microwave Anisotropy Probe) observational data and the theoretical results calculated by ΛCDM cosmological model, the anisotropic power spectrum of cosmic microwave background (CMB) at low multipoles is evidently suppressed. The effect of particle production is introduced to influence the behavior of CMB at large scale. It is shown that the primordial density fluctuation is revised due to the effect of particle production and the power spectrum of CMB is also changed correspondingly. Then a suppression is obtained naturally at the low multipoles, especially at the quadrupole. Such a picture based on the particle production during inflation may be a natural candidate to interpret the observational data.
Dong Yi-Qiao
Zhang Sheng
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