Global texture as the origin of cosmic structure

Details Global texture as the origin of cosmic structure Global texture as the origin of cosmic structure

Dec 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989phrvl..63.2625t&link_type=abstract

Physical Review Letters (ISSN 0031-9007), vol. 63, Dec. 11, 1989, p. 2625-2628. Research supported by the Alfred P. Sloan Founda

Statistics

Computation

244

Computational Astrophysics, Cosmology, Relic Radiation, Universe, Dark Matter, Density Distribution, Evolution (Development), Galactic Clusters

Scientific paper

If a unified theory possesses non-Abelian global symmetries which are spontaneously broken, it gives rise to a three-dimensional defect known as texture. In an expanding universe texture obeys a 'scaling solution,' which produces a constant density perturbation. These (isocurvature) perturbations are broadly of Harrison-Zel'dovich form, but are non-Gaussian, having strong 'spikes' in the density field. Consequences for microwave background anisotropy are briefly discussed.

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