Topological Defects with Broken Scale Invariance

Details Topological Defects with Broken Scale Invariance Topological Defects with Broken Scale Invariance

1998-04-08

arxiv.org/abs/astro-ph/9804083v1

Astronomy and Astrophysics

Astrophysics

To appear in the proceedings of the XXXIIIrd Rencontres de Moriond, "Fundamental Parameters in Cosmology", 17-24 January, Les

Scientific paper

Defect models have recently been declared dead (Watson 1997), because they predict microwave background and matter fluctuations grossly out of line with what we see. In this talk we apply the fact that many defects are automatically destroyed at the time of radiation-matter transition, thus resurrecting the defects model. Moreover, the resurrected version predicts a cosmological constant, explains the apparent excess of hot clusters and the non-Gaussianity observed in galaxy surveys. If this model is correct, then the MAP and PLANCK missions will not measure what people expect them to (oscillations); rather, they will measure a broad hump.

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