Inflation and New Agegraphic Dark Energy

Understand

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 $\eta+\delta$.