95 citations · 416 across the 19 of their papers we have counts for
23 papers · 1 filter
Towards Model Agnostic Gravity Inflation
V. K. Oikonomou
In this work we construct a formalism that can reveal the general characteristics of classes of viable inflationary theories. The assumptions we make is that the slow-roll e…
Rescaled Einstein-Gauss-Bonnet Gravity Inflation
V. K. Oikonomou, Ardit Gkioni, Iason Sdranis +2
We study the inflationary phenomenology of a rescaled Einstein-Gauss-Bonnet gravity. In this framework, the gravitational constant of the Einstein-Hilbert term is rescaled due to e…
Phenomenology of Axionic Static Neutron Stars with Masses in the Mass-Gap Region
V. K. Oikonomou
In this work we consider an axionic scalar-tensor theory of gravity and its effects on static neutron stars. The axionic theory is considered in the regime in which the axion oscil…
Red or Blue Tensor Spectrum from GW170817-compatible Einstein-Gauss-Bonnet Theory: A Detailed Analysis
V. K. Oikonomou, Pyotr Tsyba, Olga Razina
In this work we shall prove that the tensor spectral index of the primordial tensor perturbations for GW170817-compatible Einstein-Gauss-Bonnet theories, takes the approximate simp…
Primordial Cosmology of an Emergent-like Universe from Modified Gravity: Reconstruction and Phenomenology Optimization with a Genetic Algorithm
V. K. Oikonomou, Gregory K. Kafanelis
In this work we consider the realization of a variant emergent Universe scenario in the context of gravity. We use well-known reconstruction techniques existing in the liter…
Swampland Criteria and Constraints on Inflation in a Gravity Theory
V. K. Oikonomou, Konstantinos-Rafail Revis, Ilias C. Papadimitriou +1
In this paper, we worked in the framework of an inflationary theory, in the presence of a canonical scalar field. More specifically, the gravity. The valu…