74 citations · 258 across the 5 of their papers we have counts for
5 papers
The Early-time Cosmology with Stiff Era from Modified Gravity
S. D. Odintsov, V. K. Oikonomou
In this work, we shall incorporate a stiff era in the Universe's evolution in the context of gravity. After deriving the vacuum gravity, which may realize a stiff evo…
Ghost-Free Gravity with Lagrange Multiplier Constraint
S. Nojiri, S. D. Odintsov, V. K. Oikonomou
We propose two new versions of ghost-free generalized gravity with Lagrange multiplier constraint. The first version of such theory for a particular degenerate choice of the…
Phase Space Analysis of the Accelerating Multi-fluid Universe
S. D. Odintsov, V. K. Oikonomou, Petr V. Tretyakov
We study in detail the phase space of a Friedmann-Robertson-Walker Universe filled with various cosmological fluids which may or may not interact. We use various expressions for th…
Unimodular Mimetic Inflation
S. D. Odintsov, V. K. Oikonomou
We propose the unimodular-mimetic gravity theory, to resolve cosmological constant problem and dark matter problem in a unified geometric manner. We demonstrate that such a…
CDM Bounce Cosmology without CDM: the case of modified gravity
S. D. Odintsov, V. K. Oikonomou
We provide an gravity description of a CDM bouncing model, without the need for matter fluids or for cosmological constant. As we explicitly demonstrate, the two cosmolog…