Causal set approach to Quantum Gravity is a quite new theory developed at late 80’s and 90’s of last century. It is a discrete approach to Quantum Gravity, by contrast with string theory or loop quantum gravity. And it is the only theory so far, which gave us a plausible bound on the value of the cosmological constant! These are slides from my lecture in Nuclear Physics Institute in Řež in Czech republic.
Galileon cosmologies are used for modelling of the late time cosmic acceleration. These are the slides from the seminar, which I held in CEICO in Czech Academy of Sciences 3.5.2018.