6 papers
Braneworld dynamics with vacuum polarization
A. V. Toporensky, P. V. Tretyakov
We investigate the cosmological dynamics of a brane Universe when quantum corrections from vacuum polarization are taken into account. New vacuum de Sitter points existing on Randa…
Chaos in FRW cosmology with various types of a scalar field potential
A. V. Toporensky
The results on chaos in FRW cosmology with a massive scalar field are extended to another scalar field potential. It is shown that for sufficiently steep potentials the chaos disap…
Chaos in FRW cosmology with gently sloping scalar field potentials
S. A. Pavluchenko, A. V. Toporensky
The chaotic behavior in FRW cosmology with a scalar field is studied for scalar field potentials less steep than quadratic. We describe a transition to much stronger chaos for appr…
Dynamics of Bianchi IX universe with massive scalar field
A. V. Toporensky, V. O. Ustiansky
The dynamics of the Bianchi IX cosmological model with minimally coupled massive real scalar field is studied. The possibility of non-singular transition from contraction to expans…
The degree of generality of inflation in FRW models with massive scalar field and hydrodynamical matter
A. V. Toporensky
Friedmann-Robertson-Walker cosmological models with a massive scalar field are studied in the presence of hydrodynamical matter in the form of a perfect fluid. The ratio of the num…
Chaos in closed isotropic cosmological models with steep scalar field potential
A. V. Toporensky
The dynamics of closed scalar field FRW cosmological models is studied for several types of exponentially and more than exponentially steep potentials. The parameters of scalar fie…