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Inflationary -attractors from Gravity
S. D. Odintsov, V. K. Oikonomou
In this paper we study some classes of -attractors models in the Jordan frame and we find the corresponding gravity theory. We study analytically the problem at leading o…
Loop Quantum Cosmology Gravitational Baryogenesis
S. D. Odintsov, V. K. Oikonomou
Loop Quantum Cosmology is an appealing quantum completion of classical cosmology, which brings along various theoretical features which in many cases offer remedy or modify various…
Dark Energy Oscillations in Mimetic Gravity
S. D. Odintsov, V. K. Oikonomou
In this paper we address the problem of dark energy oscillations in the context of mimetic gravity with potential. The issue of dark energy oscillations can be a problem in…
Gauss-Bonnet Gravitational Baryogenesis
S. D. Odintsov, V. K. Oikonomou
In this letter we study some variant forms of gravitational baryogenesis by using higher order terms containing the partial derivative of the Gauss-Bonnet scalar coupled to the bar…
Some Classes of Gravitational Shock Waves from Higher Order Theories of Gravity
V. K. Oikonomou
We study the gravitational shock wave generated by a massless high energy particle in the context of higher order gravities of the form . In the…
Deformed Matter Bounce with Dark Energy Epoch
S. D. Odintsov, V. K. Oikonomou
We extend the Loop Quantum Cosmology matter bounce scenario in order to include a dark energy era, which ends abruptly at a Rip singularity where the scale factor and the Hubble ra…
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…
The bounce universe history from unimodular gravity
S. Nojiri, S. D. Odintsov, V. K. Oikonomou
In this paper we investigate how to realize various quite well known cosmological bouncing models in the context of the recently developed unimodular gravity. Particularly,…