327 citations · 1.4k across the 27 of their papers we have counts for
6 papers · 1 filter
From neutron stars to quark stars in mimetic gravity
A. V. Astashenok, S. D. Odintsov
Realistic models of neutron and quark stars in the framework of mimetic gravity with Lagrange multiplier constraint are presented. We discuss the effect of mimetic scalar aiming to…
Big-Bounce with Finite-time Singularity: The Gravity Description
S. D. Odintsov, V. K. Oikonomou
An alternative to the Big Bang cosmologies is obtained by the Big Bounce cosmologies. In this paper, we study a bounce cosmology with a Type IV singularity occurring at the bouncin…
Viable Mimetic Gravity Compatible with Planck Observations
S. D. Odintsov, V. K. Oikonomou
Using Mukhanov-Chamseddine mimetic approach, we study gravity with scalar potential and Lagrange multiplier constraint. As we demonstrate, for a given gravity and for…
Modified Gauss-Bonnet gravity with Lagrange multiplier constraint as mimetic theory
Artyom V. Astashenok, Sergei D. Odintsov, V. K. Oikonomou
In this paper we propose and extensively study mimetic modified gravity models, with various scenarios of cosmological evolution, with or without extra matter fluids.…
Singular deformations of nearly inflation potentials
S. D. Odintsov, V. K. Oikonomou
We investigate in which cases a singular evolution with a singularity of Type IV, can be consistently incorporated in deformations of the inflationary potential. After demons…
Superbounce and Loop Quantum Ekpyrotic Cosmologies from Modified Gravity: , and Theories
S. D. Odintsov, V. K. Oikonomou, Emmanuel N. Saridakis
We investigate the realization of two bouncing paradigms, namely of the superbounce and the loop quantum cosmological ekpyrosis, in the framework of various modified gravities. In…