Inflation with Gauss-Bonnet coupling

Zhu Yi, Yungui Gong, Mudassar Sabir

We consider inflationary models with the inflaton coupled to the Gauss-Bonnet term assuming a special relation ${\delta }_1=2\lambda {\epsilon }_1$ between the two slow-roll parameters ${\delta }_1$ and ${\epsilon }_1$. For…