Ki-Young Choi, Bumseok Kyae
We propose an inflationary model ("natural hybrid model"), which combines the
supersymmetric hybrid model and the natural inflation model to achieve the
spectral index of 0.96, and the axion decay constant smaller than the Planck
scale, f<< M_P. By introducing both U(1)_R and a shift symmetry and employing
the minimal Kahler potential, the eta-problem can be still avoided. The two
inflaton fields in this model can admit large non-Gaussianity.
View original:
http://arxiv.org/abs/1109.4245
No comments:
Post a Comment