75 citations · 106 across the 3 of their papers we have counts for
3 papers
astro-ph.CO2023★ 7 cited
A Stiff Pre-CMB Era with a Mildly Blue-tilted Tensor Inflationary Era can Explain the 2023 NANOGrav Signal
V. K. Oikonomou
We examine the effects of a stiff pre-recombination era on the present day's energy spectrum of the primordial gravitational waves. If the background total equation of state parame…
gr-qc2022★ 24 cited
Amplification of the Primordial Gravitational Waves Energy Spectrum by a Kinetic Scalar in Gravity
V. K. Oikonomou
In this work we consider a combined theoretical framework comprised by gravity and a kinetic scalar field. The kinetic energy of the scalar field dominates over its potentia…
gr-qc2022★ 75 cited
Spectrum of Primordial Gravitational Waves in Modified Gravities: A Short Overview
S. D. Odintsov, V. K. Oikonomou, R. Myrzakulov
In this work we shall exhaustively study the effects of modified gravity on the energy spectrum of the primordial gravitational waves background. S. Weinberg has also produced sign…