Chameleon Dark Energy

Participating Researchers: Amanda Weltman

A major effort is underway worldwide to discover the properties of dark energy including its couplings to regular matter. In recent years the idea of a chameleon type dark energy has been proposed in which the nature of the field responsible for the observed accelerated expansion of the universe is very much dependent on the environment. Thus the properties of dark energy could very well be studied in
previously un-thought of settings. These range from small-scale lab experiments to large-scale collider experiments and finally to astrophysical sources. The aim of this programme is to look at all such settings and either provide the first non- cosmological evidence for the dark energy particle or ultimately rule out this theory.