Scalar cosmological perturbations from inflationary black holes

Details Scalar cosmological perturbations from inflationary black holes Scalar cosmological perturbations from inflationary black holes

2010-07-22

arxiv.org/abs/1007.3851v2

JCAP 1103:050,2011

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

41 pages, 11 figures, published version

Scientific paper

10.1088/1475-7516/2011/03/050

We study the correction to the scale invariant power spectrum of a scalar field on de Sitter space from small black holes that formed during a pre-inflationary matter dominated era. The formation probability of such black holes is estimated from primordial Gaussian density fluctuations. We determine the correction to the spectrum by first deriving the Keldysh propagator for a massless scalar field on Schwarzschild-de Sitter space. Our results suggest that the effect is strong enough to be tested -- and possibly even ruled out -- by observations.

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