126 citations · 455 across the 15 of their papers we have counts for
15 papers
Slow-roll approximations for Gauss-Bonnet inflation revisited
Bogdan A. Rudenko, Maria A. Skugoreva, Alexey V. Toporensky
In our paper we consider the validity of slow-roll approximations for Gauss-Bonnet inflation introduced in [1]. In contrast to the cited paper where the coupling function before th…
More accurate slow-roll approximations for inflation in scalar-tensor theories
Ekaterina O. Pozdeeva, Maria A. Skugoreva, Alexey V. Toporensky +1
We propose new versions of the slow-roll approximation for inflationary models with nonminimally coupled scalar fields. We derive more precise expressions for the standard slow-rol…
New slow-roll approximations for inflation in Einstein-Gauss-Bonnet gravity
Ekaterina O. Pozdeeva, Maria A. Skugoreva, Alexey V. Toporensky +1
We propose new slow-roll approximations for inflationary models with the Gauss-Bonnet term. We find more accurate expressions of the standard slow-roll parameters as functions of t…
A note on the arrow of time in nonminimally coupled scalar field FRW cosmology
L. León Andonayre, M. Skugoreva, A. Toporensky +1
We revisit the cyclic Universe scenario in scalar field FRW cosmology and check its applicability for a nonminimally coupled scalar field. We show that for the most popular case of…
Bouncing solutions in gravity
Maria A. Skugoreva, Alexey V. Toporensky
We consider certain aspects of cosmological dynamics of a spatially curved Universe in gravity. Local analysis allows us to find conditions for bounces and for static soluti…
Anisotropic cosmological dynamics in gravity in the presence of a perfect fluid
Maria A. Skugoreva, Alexey V. Toporensky
We consider the cosmological evolution of a flat anisotropic Universe in gravity in the presence of a perfect fluid. It is shown that the matter content of the Universe has…
Emergence of cosmological scaling behavior in asymptotic regime
M. A. Skugoreva, M. Sami, N. Jaman
In this paper we consider a scalar field system with a class of potentials given by the expression, ; for which $…
On Kasner solution in Bianchi I cosmology
Maria A. Skugoreva, Alexey V. Toporensky
Recently cosmological dynamics of anisotropic Universe in gravity became an area of intense investigations. Some earlier papers devoted to this issue contain contradictory c…
Late-time power-law stages of cosmological evolution in teleparallel gravity with nonminimal coupling
Maria A. Skugoreva
We investigate the Universe evolution at late-time stages in models of teleparallel gravity with power-law nonminimal coupling and a decreasing power-law potential of the scalar fi…
Possible evolution of a bouncing universe in cosmological models with non-minimally coupled scalar fields
Ekaterina O. Pozdeeva, Maria A. Skugoreva, Alexey V. Toporensky +1
We explore dynamics of cosmological models with bounce solutions evolving on a spatially flat Friedmann-Lemaitre-Robertson-Walker background. We consider cosmological models that c…
Asymptotic cosmological regimes in scalar-torsion gravity with a perfect fluid
Maria Skugoreva, Alexey Toporensky
We consider cosmological dynamics of nonminimally coupled scalar field in the scalar-torsion gravity in the presence of a hydrodynamical matter. Potential of the scalar field have…
Dynamical features of scalar-torsion theories
Maria Skugoreva, Emmanuel Saridakis, Alexey Toporensky
We investigate the cosmological dynamics in teleparallel gravity with nonminimal coupling. We analytically extract several asymptotic solutions and we numerically study the exact p…
Global stability analysis for cosmological models with non-minimally coupled scalar fields
Maria A. Skugoreva, Alexey V. Toporensky, Sergey Yu. Vernov
We explore dynamics of cosmological models with a nonminimally coupled scalar field evolving on a spatially flat Friedmann-Lemaitre-Robertson-Walker background. We consider cosmolo…
Cosmology with nonminimal kinetic coupling and a power-law potential
Maria A. Skugoreva, Sergey V. Sushkov, Alexei V. Toporensky
We consider cosmological dynamics in the theory of gravity with the scalar field possessing a nonminimal kinetic coupling to gravity, , and the power-law potential $…
Cosmological dynamics of non-minimally coupled scalar field system and its late time cosmic relevance
M. Sami, M. Shahalam, M. Skugoreva +1
We investigate the cosmological dynamics of non-minimally coupled scalar field system described by coupling with () and the field potential, $V(ϕ)=V_…