Natural hybrid inflation model with large non-Gaussianity

作者：Choi Ki Young; Kyae Bumseok^*

来源：Physics Letters B, 2012, 706(4-5): 243-250.

DOI：10.1016/j.physletb.2011.11.045

• Hybrid inflation
• Natural inflation
• Spectral index
• Non-Gaussianity

We propose an inflationary model (%26quot;natural hybrid model%26quot;), 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 %26lt;%26lt; 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 call admit large non-Gaussianity.

• 出版日期2012-1-5