19 citations · 41 across the 11 of their papers we have counts for
9 papers · 1 filter
String-inspired Gauss-Bonnet Gravity Inflation and ACT
S. D. Odintsov, V. K. Oikonomou, Pyotr Tsyba +2
In this article we present a systematic observational verification of the ghost-free string-inspired model, where the Gauss-Bonnet invariant is non-minimally cou…
Exact solution of the Einstein-scalar-Gauss-Bonnet model with Noether symmetry constraints
Olga Razina, Dauren Rakhatov, Pyotr Tsyba +1
By applying Noether symmetry methods, analytic solutions are obtained for a generalized Einstein-scalar-Gauss-Bonnet model with a component. Variation with respect to th…
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…
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…
Einstein-Gauss-Bonnet Cosmological Theories at Reheating and at the End of the Inflationary Era
V. K. Oikonomou, Pyotr Tsyba, Olga Razina
In this work we study the GW170817-compatible Einstein-Gauss-Bonnet theories during the reheating and the end of inflationary era. Given the scalar field potential which can…
Kinetic Axion Dark Matter in String Corrected Gravity
V. K. Oikonomou, F. P. Fronimos, Pyotr Tsyba +1
Under the main assumption that the axion scalar field mainly composes the dark matter in the Universe, in this paper we shall extend the formalism of kinetic axion gravity to…