Now showing items 1-3 of 3

    • Dark interactions beyond the Lambda-CDM model 

      Van der Westhuizen, Marcel Adriaan (North-West University (South Africa), 2022)
      In this study, cosmological models are considered, where dark matter and dark energy are coupled and may exchange energy through non-gravitational interactions with one other. These interacting dark energy (IDE) models ...
    • A dynamical systems analysis of interacting dark energy models 

      Molosi, Vuyani (North-West University (South Africa), 2022)
      We investigate using dynamical system analysis; the impacts of various interaction models whereby dark energy is coupled with dark matter. Examination on the nature of critical points for each interaction model introduced ...
    • Quasi-Newtonian Cosmological Models in Scalar-Tensor Theories of Gravity 

      Abdulrahman, Heba S.H. (North-West University (South Africa), 2018)
      Theoretical physics in general and cosmology in particular have faced some challenges due to the recent observations in cosmology and astronomy, such as the discovery of the accelerated cosmic expansion and the existence ...