Speaker
Description
Interacting dark energy (IDE) models are cosmological models in which dark matter and dark energy interact in a non-gravitational manner, and have been introduced to address long-standing theoretical and observational tensions in cosmology. We discuss recent developments in the field, highlighting both the relevance and potential pitfalls of these models. In particular, we discuss how certain sections of the parameter space may lead to dynamics that alleviate the coincidence problem and allow phantom crossings, while other sections lead to negative energy densities, future big rip singularities, and other exotic behaviours. We find a general theoretical preference for IDE models in which energy flows from DE to DM. Finally, we compare the background dynamics of our IDE model with some of the latest cosmological data.
