Speaker
Description
Dynamical systems theory is a useful tool for assessing cosmological models. In this talk, I will look at applying it to second-order modified gravity theories in an approach that leads to several model-independent results. Moreover, as well as being model independent, the formulation is equally applicable to three second-order geometric modifications of gravity, teleparallel f(T) gravity, symmetric teleparallel f(Q) gravity, and the metric theory f(G) gravity. This is due to the equivalence of all three theories when working with the FLRW metric (in appropriate coordinates/tetrads). This approach reveals generic information about all possible models in any of the three theories, irrespective of the choice of function f. The existence and stability criteria for the fixed points are then analysed and discussed.
