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Integrable Cosmological Model with van der Waals Gas and Matter Creation
Rossen I. Ivanov, Emil M. Prodanov
A cosmological model with van der Waals gas and dust has been studied in the context of a three-component autonomous non-linear dynamical system involving the time evolution of the…
On the Cosmological Models with Matter Creation
Rossen I. Ivanov, Emil M. Prodanov
The matter creation model of Prigogine--Géhéniau--Gunzig--Nardone is revisited in terms of a redefined creation pressure which does not lead to irreversible adiabatic evolution at…
Van der Waals Universe with Adiabatic Matter Creation
Rossen I. Ivanov, Emil M. Prodanov
A FRWL cosmological model with perfect fluid comprising of van der Waals gas and dust has been studied in the context of dynamical analysis of a three-component autonomous non-line…
Dynamical Analysis of an Cosmological Quintessence Real Gas Model with a General Equation of State
Rossen I. Ivanov, Emil M. Prodanov
The cosmological dynamics of a quintessence model based on real gas with general equation of state is presented within the framework of a three-dimensional dynamical system describ…
Cyclic Universe with an Inflationary Phase from a Cosmological Model with Real Gas Quintessence
Rossen I. Ivanov, Emil M. Prodanov
Phase-plane stability analysis of a dynamical system describing the Universe as a two-fraction fluid containing baryonic dust and real virial gas quintessence is presented. Existen…
Pseudo-Newtonian Potential for Charged Particle in Kerr-Newman Geometry
Rossen I. Ivanov, Emil M. Prodanov
We consider the equatorial circular motion of a test particle of specific charge q/m << 1 in the Kerr-Newman geometry of a rotating charged black hole. We find the particle's conse…