3 papers
gr-qc2019
A Study of an Einstein Gauss-Bonnet Quintessential Inflationary Model
K. Kleidis, V. K. Oikonomou
In this paper we study a class of quintessential Einstein Gauss-Bonnet models, focusing on their early and late-time phenomenology. With regard to the early-time phenomenology, we…
gr-qc2018
Autonomous Dynamical System Description of de Sitter Evolution in Scalar Assisted Gravity
K. Kleidis, V. K. Oikonomou
In this letter we will study the cosmological dynamical system of an gravity in the presence of a canonical scalar field with an exponential potential, by constructing t…
nlin.CD2018
The power spectrum indicator: A new, efficient method for the early detection of chaos
Christos Vozikis, Konstantinos Kleidis, Stavros Papaioannou
To determine the regular or chaotic nature of the orbits in dynamical systems can be quite an issue. In this article, following Vozikis et al. (2000), we propose a new tool, namely…