R. Durrer et al., COSMIC MICROWAVE BACKGROUND ANISOTROPIES FROM SCALING SEEDS - FIT TO OBSERVATIONAL DATA, Physical review letters, 79(26), 1997, pp. 5198-5201
We compute cosmic microwave background angular power spectra for scali
ng seed models of structure formation. A generic parametrization of th
e energy momentum tensor of the seeds is employed. We concentrate on t
wo regions of parameter space inspired by global topological defects:
O(4) texture models and the large-N limit of O(N) models. We use chi(2
) fitting to compare these models to recent flat-band power measuremen
ts of the cosmic microwave background. Only scalar perturbations are c
onsidered. [S0031-9007(97)04954-5].