Anisotropic non-Gaussianity from vector field perturbations
Journal Article
·
· Physical Review. D, Particles Fields
- Department of Physics, Lancaster University, Lancaster LA1 4YB (United Kingdom)
We suppose that a vector field perturbation causes part of the primordial curvature perturbation. The non-Gaussianity parameter f{sub NL} is then, in general, statistically anisotropic. We calculate its form and magnitude in the curvaton scenario and in the end-of-inflation scenario. We show that this anisotropy could easily be observable.
- OSTI ID:
- 21316197
- Journal Information:
- Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 2 Vol. 80; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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