Hua Wang, Taotao Qiu, Yun-Song Piao
In this paper, we study a curvaton model where the curvaton is acted by
Galileon field. We calculate the power spectrum of fluctuation of G-curvaton
during inflation and discuss how it converts to the curvature perturbation
after the end of inflation. We estimate the bispectrum of curvature
perturbation induced, and show the dependence of non-Gaussianity on the
parameters of model. It is found that our model can have sizable local and
equilateral non-Gaussianities to up to ${\cal O}(10^2)$, which is illustrated
by an explicit example.
View original:
http://arxiv.org/abs/1110.1795
No comments:
Post a Comment