Topological Defect Models of Structure Formation After the COBE Discovery of CMB Anisotropies

Details Topological Defect Models of Structure Formation After the COBE Discovery of CMB Anisotropies Topological Defect Models of Structure Formation After the COBE Discovery of CMB Anisotropies

1992-10-24

arxiv.org/abs/hep-ph/9210261v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

25 pages, 10 figures (available from the author), uses phyzzx

Scientific paper

The COBE satellite has discovered anisotropies in the cosmic microwave background (CMB) consistent with a scale invariant spectrum of density perturbations. As reviewed in this lecture, topological defect models of structure formation generically produce such a spectrum. We give a summary of the cosmic string and global texture models, focusing on distinct observational signatures in large-scale structure surveys and in the microwave background. It is shown that the amplitude of the CMB quadrupole detected by COBE is in good agreement with the predictions of the cosmic string model.

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