Multi-Stream Inflation

Details Multi-Stream Inflation Multi-Stream Inflation

2009-03-12

arxiv.org/abs/0903.2123v3

JCAP07(2009)033

Physics

High Energy Physics

High Energy Physics - Theory

14 pages, 2 figures; v2: references added; v3: final version to appear on JCAP

Scientific paper

10.1088/1475-7516/2009/07/033

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.

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