Multi-Stream Inflation
High Energy Physics - Theory
2014-11-18 v3 Cosmology and Nongalactic Astrophysics
General Relativity and Quantum Cosmology
Abstract
We propose a "multi-stream" inflation model, which is a double field model with spontaneous breaking and restoration of an approximate symmetry. We calculate the density perturbation and non-Gaussianity in this model. We find that this model can have large, scale dependent, and probably oscillating non-Gaussianity. We also note that our model can produce features in the CMB power spectrum and hemispherical power asymmetry.
Cite
@article{arxiv.0903.2123,
title = {Multi-Stream Inflation},
author = {Miao Li and Yi Wang},
journal= {arXiv preprint arXiv:0903.2123},
year = {2014}
}
Comments
14 pages, 2 figures; v2: references added; v3: final version to appear on JCAP