299 citations · 397 across the 6 of their papers we have counts for
4 papers · 1 filter
Building cubic gravity with healthy and viable scalar and tensor perturbations
Petros Asimakis, Spyros Basilakos, Emmanuel N. Saridakis
We investigate sufficient conditions under which cubic gravity is healthy and viable at the perturbation level. We perform a detailed analysis of the scalar and tensor perturbation…
Modified gravity and cosmology with nonminimal (derivative) coupling between matter and the Einstein tensor
Petros Asimakis, Spyros Basilakos, Andreas Lymperis +2
We construct new classes of modified theories in which the matter sector couples with the Einstein tensor, namely we consider direct couplings of the latter to the energy-momentum…
Big Bang Nucleosynthesis constraints on gravity
Petros Asimakis, Emmanuel N. Saridakis, Spyros Basilakos +1
We confront gravity, with Big Bang Nucleosynthesis (BBN) requirements. The former is obtained using both the torsion scalar, as well as the teleparallel equivalent of th…
Big Bang Nucleosynthesis constraints on higher-order modified gravities
Petros Asimakis, Spyros Basilakos, Nick E. Mavromatos +1
We use Big Bang Nucleosynthesis (BBN) data in order to impose constraints on higher-order modified gravity, and in particular on: (i) Gauss-Bonnet gravity, and cubic…