Reproducing the observed Cosmic microwave background anisotropies with causal scaling seeds

Details Reproducing the observed Cosmic microwave background anisotropies with causal scaling seeds Reproducing the observed Cosmic microwave background anisotropies with causal scaling seeds

2000-10-31

arxiv.org/abs/astro-ph/0010633v2

Phys.Rev.D63:081301,2001

Astronomy and Astrophysics

Astrophysics

6 pages 2 figures, revtex; minor corrections and references added

Scientific paper

10.1103/PhysRevD.63.081301

During the last years it has become clear that global O(N) defects and U(1) cosmic strings do not lead to the pronounced first acoustic peak in the power spectrum of anisotropies of the cosmic microwave background which has recently been observed to high accuracy. Inflationary models cannot easily accommodate the low second peak indicated by the data. Here we construct causal scaling seed models which reproduce the first and second peak. Future, more precise CMB anisotropy and polarization experiments will however be able to distinguish them from the ordinary adiabatic models.

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