Long-range interactions have been a cornerstone of physics since the inception of the field. In cosmology and astroparticle physics, they play a critical role in shaping our understanding of cosmic evolution. For instance, long-range interactions, like Yukawa interactions, may drive primordial structure formation and contribute to the creation of exotic objects like primordial black holes. Furthermore, these interactions are also deeply connected to our understanding of partial wave unitarity, a crucial tool for probing modern dark matter models. In this talk, I will examine the significance of long-range interactions and their potential impact on the early evolution of the Universe.
