A cosmological dark-energy model in which new agegraphic dark energy -- whose density is set by the age of the universe through a quantum-gravity length scale -- interacts with dark matter inside f(Q) symmetric teleparallel gravity for a flat Friedmann-Robertson-Walker universe. Students learn how the equation-of-state parameter, the omega-omega prime and statefinder r-s planes, and the squared speed of sound characterize the model's quintessence-like, freezing behavior and its instability, and how the dark-sector interaction addresses the cosmic coincidence problem.
The authors study the cosmological behavior of the new agegraphic dark energy (NADE) model within f(Q) modified symmetric teleparallel gravity, for a flat Friedmann-Robertson-Walker universe with an …