Description
What is dark energy and how do we find it?
I will briefly review the cosmological constant problems, and our motivations for indroducing a new dark energy component into our model of cosmology. I will discuss why this motivates us to think about including light scalar fields which can mediate fifth forces. We will discuss how non-linearities can change the behaviour of these fifth forces, both allowing them to hide from traditional searches as well as allowing new opportunities for detection.
Chair: Tom Stone
