Inflation and New Agegraphic Dark Energy

Abstract

In the note, we extend the discussion of the new agegraphic dark energy (NADE) model to include the inflation stage. Usually, in the inflation models, for convenience the conformal time $\eta$ is set to be zero at the end of inflation. This is incompatible with the NADE model since $\eta=0$ indicates the divergence of NADE. To avoid the difficulty, we can redefine the conformal time as $\eta+\delta$. However, we find that the positive constant $\delta$ must be so large that NADE can not become dominated at present time.