Speaker
Description
In this work, inflationary models with Gauss-Bonnet term is classified into two categories based on their prediction for the tensor spectral index ($n_T$). We showed that the energy spectrum of the primordial gravitational waves (GWs) induced by a group of models that predict blue-tilted tensor spectrum ($n_T>0$) can be probed by the future space-based laser interferometer experiment such as DECIGO in frequency ranges of $0.1-10$ Hz. If the signals of primordial GW background from our models is detected, it would determine the lower bound of the reheating temperature, which is $T_\text{re}\geq10^{-6}$ in our case. Our further analyses on reheating parameters imply that the effect of GB term is significant not only during inflation but also during reheating regardless of the process is instantaneous or lasted for a certain number of $e$-folds until it completes.
