Title: The Universe in a Box

||
Abstract:
||

In this talk we will introduce CosmoLattice, a modern code for simulating the non-linear dynamics of interactive fields in an expanding universe. As a demonstration of its power we will solve three very different problems of early Universe dynamics: i) the number of e-folds between inflation and radiation domination, ii) the generation and use of gravitational waves as a probe of particle couplings, and iii) the dynamics of non-minimally coupled scalar fields in the Jordan frame.