Non-gaussian density perturbations in inflationary cosmologies

Details Non-gaussian density perturbations in inflationary cosmologies Non-gaussian density perturbations in inflationary cosmologies

Oct 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987phlb..197...66a&link_type=abstract

Physics Letters B, Volume 197, Issue 1-2, p. 66-70.

Physics

115

Scientific paper

The primordial mass density fluctuations may have arisen from quantum fluctuations in a (massless) scalar field that occurred during an inflationary era. We show that it is possible for primordial mass density fluctuations, which arose in this way, to be highly non-gaussian. We also show that the ``bad'' infrared properties of the propagator for a massless scalar field in de Sitter space can translate itself into a power spectrum, for the two-point spatial correlation of objects that do not trace the mass, which behaves like k-3, at small wave numbers k.
Sloan Fellow.

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