4 papers
Saturation Mechanisms in the Interacting Dark Sector
Andronikos Paliathanasis, Kevin J. Duffy
We introduce a family of phenomenological cosmological models featuring an interacting dark sector modulated by a sparseness scale parameter, in order to describe the late-time acc…
Lagrangians and Newtonian analogues for Biological Systems
Andronikos Paliathanasis, Kevin Duffy
This study investigates the potential for biological systems to be governed by a variational principle, suggesting that such systems may evolve to minimize or optimize specific qua…
Compartmentalization and Coexistence in the Dark Sector of the Universe
Andronikos Paliathanasis, Kevin Duffy, Amlan Halder +1
We revise the cosmological interaction between dark energy and dark matter. More precisely, we focus on models that support compartmentalization or co-existence in the dark sector…
Mapping Solutions in Nonmetricity Gravity: Investigating Cosmological Dynamics in Conformal Equivalent Theories
Nikolaos Dimakis, Kevin Duffy, Alex Giacomini +3
We investigate the impact of conformal transformations on the physical properties of solution trajectories in nonmetricity gravity. Specifically, we explore the phase-space and rec…