142 citations · 195 across the 4 of their papers we have counts for
7 papers
Effects of a Pre-inflationary de Sitter Bounce on the Primordial Gravitational Waves in Gravity Theories
V. K. Oikonomou
In this work we examine the effects of a pre-inflationary de Sitter bounce on the energy spectrum of the primordial gravitational waves. Specifically we assume that the Universe is…
Quantum Corrected Scalar Field Inflation
V. K. Oikonomou, Ifigeneia Giannakoudi
String theory enjoys an elevated role among quantum gravity theories, since it seems to be the most consistent UV completion of general relativity and the Standard Model. However,…
Power-Law Gravity Corrected Canonical Scalar Field Inflation
V. K. Oikonomou
The effective inflationary Lagrangian is a prominent challenge for theoretical cosmologists, since it may contain imprints of the quantum epoch. In view of the fact that higher ord…
Unifying of Inflation with Early and Late Dark Energy Epochs in Axion Gravity
V. K. Oikonomou
We provide a theoretical model of gravity in which it is possible to describe in a unified way inflation, an early and a late dark energy era, in the presence of a light axi…
Rescaled Einstein-Hilbert Gravity from Gravity: Inflation, Dark Energy and the Swampland Criteria
V. K. Oikonomou
We consider a class of exponential models of gravity, in the presence of a canonical scalar field, for which at early times the effective Lagrangian of the theory becomes th…
Exponential Inflation with Gravity
V. K. Oikonomou
In this paper we shall consider an exponential inflationary model in the context of vacuum gravity. By using well-known reconstruction techniques, we shall investigate which…