A new take on the inflationary quintessence

Understand

The quintessence field coupled to the cosmic neutrino background (CNB) has been widely discussed as an alternative mechanism to address the coincidence problem.

• As it is well known, it is possible to extend such models to obtain quintessential inflation, that is, to incorporate inflationary stage as well.
• Taking an alternative route, one can start from the well established inflationary models and obtain successful quintessence models at the expense of coupling with the CNB.
• To Follow this route, we use a slightly reformulated model addressed in PRD95, 123521 (2017).