57 citations
13 papers
Non-minimally coupled scalar field cosmology on the phase plane
Orest Hrycyna, Marek Szydlowski
In this publication we investigate dynamics of a flat FRW cosmological model with a non-minimally coupled scalar field with the coupling term in the scalar field action.…
Universe from vacuum in loop-string cosmology
Jakub Mielczarek, Marek Szydlowski
In this paper we study the description of the Universe based on the low energy superstring theory modified by the Loop Quantum Gravity effects.This approach was proposed by De Risi…
Exact solutions for Big Bounce in loop quantum cosmology
Jakub Mielczarek, Tomasz Stachowiak, Marek Szydlowski
In this paper we study the flat (k=0) cosmological FRW model with holonomy corrections of Loop Quantum Gravity. The considered universe contains a massless scalar field and the cos…
Emerging singularities in the bouncing loop cosmology
Jakub Mielczarek, Marek Szydlowski
In this paper we calculate corrections from holonomies in the Loop Quantum Gravity, usually not taken into account. Allowance of the corrections of this kind is…
Coupling constant constraints in a nonminimally coupled phantom cosmology
Marek Szydlowski, Orest Hrycyna, Aleksandra Kurek
In the paper we investigate observational constraints on coupling to gravity constant parameter using distant supernovae SNIa data, baryon oscillation peak (BOP), the cosmic mi…
Extended Quintessence with non-minimally coupled phantom scalar field
Orest Hrycyna, Marek Szydlowski
We investigate evolutional paths of an extended quintessence with a non-minimally coupled phantom scalar field to the Ricci curvature. The dynamical system methods are used to…