177 citations · 1.3k across the 24 of their papers we have counts for
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Ghost-free non-local Gravity Cosmology
Shin'ichi Nojiri, S. D. Odintsov, V. K. Oikonomou
In this work we shall study ghost-free non-local gravity models. Firstly we shall demonstrate how the ghost degrees of freedom may occur in the non-local gravity mode…
Propagation of Gravitational Waves in Chern-Simons Axion Einstein Gravity
Shin'ichi Nojiri, S. D. Odintsov, V. K. Oikonomou +1
In this paper we shall investigate the propagation of gravitational waves in a flat Friedman-Robertson-Walker background, in the context of a string motivated corrected Einstein gr…
Effects of Spatial Curvature on the Gravity Phase Space: no Inflationary Attractor?
S. D Odintsov, V. K. Oikonomou
In this paper we study the effects of spatial curvature of the metric on the phase space of vacuum gravity. Particularly, we appropriately choose the variables of the dynami…
Gravity Inflation with String-Corrected Axion Dark Matter
S. D. Odintsov, V. K. Oikonomou
It is quite well known for some time that string inspired axionic terms of the form , known also as Chern-Simons terms, do not affect the scalar perturbations and t…