Published July 15, 2009
| Version v1
Journal article
Anisotropic non-Gaussianity from vector field perturbations
- 1. Department of Physics, Lancaster University, Lancaster LA1 4YB (United Kingdom)
Description
We suppose that a vector field perturbation causes part of the primordial curvature perturbation. The non-Gaussianity parameter fNL 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.
Additional details
Identifiers
- DOI
- 10.1103/PhysRevD.80.023509;
- arXiv
- arXiv:0812.0264v2;
Publishing Information
- Journal Title
- Physical Review. D, Particles Fields
- Journal Volume
- 80
- Journal Issue
- 2
- Journal Page Range
- p. 023509-023509.8
- ISSN
- 0556-2821
- CODEN
- PRVDAQ
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 41059731
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- ANISOTROPY; COMPUTERIZED SIMULATION; DISTURBANCES; INFLATIONARY UNIVERSE; PERTURBATION THEORY; VECTOR FIELDS
- Descriptors DEC
- COSMOLOGICAL MODELS; MATHEMATICAL MODELS; SIMULATION
Optional Information
- Notes
- (c) 2009 The American Physical Society