Now showing items 1-2 of 2

    • Constraining modified gravity models with cosmological data 

      Hough, R. T. (North-West University (South Africa), 2020)
      In this dissertation, we looked at the cosmological constraints of some f(R)-modi ed gravity models, such as f(R) = Rn (our rst toy model), f(R) = R + Rn (our second toy model), and more realistic ones like the Starobinsky ...
    • 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 ...