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Viable non-singular cosmic bounce in holonomy improved F(R) gravity endowed with a Lagrange multiplier
Emilio Elizalde, S. D. Odintsov, Tanmoy Paul
Matter and quasi-matter bounce scenarios are studied for an F(R) gravity model with holonomy corrections and a Lagrange multiplier, with a scale factor $a(t) = \left(a_0t^2 + 1 \ri…
Thermodynamical correspondence of gravity in Jordan and Einstein frames
G. G. L. Nashed, W. El Hanafy, S. D. Odintsov +1
We study the thermodynamical aspects of gravity in the Jordan and the Einstein frame, and we investigate the corresponding equivalence of the thermodynamical quantities in t…
Correspondence of cosmology from non-extensive thermodynamics with fluids of generalized equation of state
Shin'ichi Nojiri, Sergei D. Odintsov, Emmanuel N. Saridakis +1
We show that there is a correspondence between cosmology from non-extensive thermodynamics and cosmology with fluids of redefined and generalized equation of state. We first establ…
Unifying Inflation with Early and Late-time Dark Energy in Gravity
Shin'ichi Nojiri, Sergei D. Odintsov, V. K. Oikonomou
In this work we shall present models of gravity which realize in a unified way the inflationary era along with a post-inflationary early dark energy era, with the late-time…
Constant-roll -Inflation Dynamics
S. D. Odintsov, V. K. Oikonomou
In this work we shall investigate the phenomenological implications of the constant-roll condition on a -Inflation theory of gravity. The latter theories are particularly promis…
Non-singular Bounce Cosmology from Lagrange Multiplier Gravity
Shin'ichi Nojiri, S. D. Odintsov, V. K. Oikonomou +1
In this work we study non-singular{ bounce cosmology} in the context of the Lagrange multiplier generalized gravity theory of gravity. We specify our study by using a specif…