95 citations · 274 across the 9 of their papers we have counts for
15 papers
Gravity Effects on the Kinetic Axion Phase Space
V. K. Oikonomou
In this work we consider the effect of an term on the kinetic misalignment axion theory. By using the slow-roll assumptions during inflation and the field equations, we const…
Bottom-Up Reconstruction of Viable GW170817 Compatible Einstein-Gauss-Bonnet Theories
V. K. Oikonomou, P. D. Katzanis, Ilias C. Papadimitriou
In this work we shall use a bottom-up approach for obtaining viable inflationary Einstein-Gauss-Bonnet models which are also compatible with the GW170817 event. Specifically, we sh…
Did the Universe Experienced a Pressure non-Crushing Type Cosmological Singularity in the Recent Past?
S. D. Odintsov, V. K. Oikonomou
In the recent literature it has been shown that the tension may be eliminated if an abrupt physics transition changed the Cepheid parameters in the near past of the Universe,…
On the Occurrence of Finite-time Singularities in Swampland-related Quintessence Dark Energy Models
V. K. Oikonomou, Achilles Gitsis, Maria Mitrou
In this work we focus on the phase space singularities of interactive quintessence model in the presence of matter fluid. This model is related to swampland studies, that the outco…
A Refined Einstein-Gauss-Bonnet Inflationary Theoretical Framework
V. K. Oikonomou
We provide a refined and much more simplified Einstein-Gauss-Bonnet inflationary theoretical framework, which is compatible with the GW170817 observational constraints on the gravi…
Universal Inflationary Attractors Implications on Static Neutron Stars
V. K. Oikonomou
We study static neutron stars in the context of a class of non-minimally coupled inflationary potentials, the universal attractors. Universal attractors are known to generate a via…