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摘要
En 中文
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 hemispherical power asymmetry.
Keyword:
inflation
cosmological perturbaiton theory
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IF:
5.9
论文数:
1.3W
被引数:
4.7W
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