Dynamics and cosmological evolution in -varying cosmology G. Papagiannopoulos, Pavlina Tsiapi, Spyros Basilakos and Andronikos Paliathanasis Eur. Phys. J. C, 80 1 (2020) 55 Published online: 23 January 2020 DOI: 10.1140/epjc/s10052-019-7600-z