Non-Gaussianity from self-ordering scalar fields

@article{Figueroa2010NonGaussianityFS,
  title={Non-Gaussianity from self-ordering scalar fields},
  author={Daniel G. Figueroa and Robert R. Caldwell and Marc Kamionkowski},
  journal={Physical Review D},
  year={2010},
  volume={81},
  pages={123504}
}
The Universe may harbor relics of the post-inflationary epoch in the form of a network of self-ordered scalar fields. Such fossils, while consistent with current cosmological data at trace levels, may leave too weak an imprint on the cosmic microwave background and the large-scale distribution of matter to allow for direct detection. The non-Gaussian statistics of the density perturbations induced by these fields, however, permit a direct means to probe for these relics. Here we calculate the… 

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