Testing for the Gaussian nature of cosmological density perturbations through the three-point temperature correlation function.

Details Testing for the Gaussian nature of cosmological density perturbations through the three-point temperature correlation function. Testing for the Gaussian nature of cosmological density perturbations through the three-point temperature correlation function.

Aug 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993phrvl..71.1124x&link_type=abstract

Physical Review Letters, Vol. 71, No. 8, p. 1124 - 1127

Mathematics

Logic

1

Early Universe: Density Perturbations, Cosmic Microwave Background: Anisotropy

Scientific paper

One of the crucial aspects of density perturbations that are produced by the standard inflation scenario is that they are Gaussian, whereas seeds produced by topological defects tend to be non-Gaussian. The three-point correlation function of the temperature anisotropy of the cosmic microwave background radiation (CBR) provides a sensitive test of this aspect of the primordial density field. In this paper, this function is calculated in the general context of various allowed non-Gaussian models. It is shown that COBE and the forthcoming South Pole and balloon CBR anisotropy data may be able to provide a crucial test of the Gaussian nature of the perturbations.

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