Professor Koushiappas works in the interface between cosmology and particle physics. His work is predominantly in the area of dark matter physics and the search for the nature of the dark matter particle from an experimentally-motivated theoretical perspective. He is interested in the effects of the dark matter particle properties (mass, couplings) to the large-scale structure of the universe, the disentanglement of diffuse high-energy astrophysical backgrounds in the context of dark matter searches, as well as new statistical approaches to a wide variety of problems. He also maintain interests in classical astrophysical problems and has also made contributions in the fields of galaxy formation, gravitational lensing and gravitational waves. He joined Brown University in the summer of 2008. Before that he was a postdoctoral researcher in the Theoretical Division at Los Alamos National Laboratory, and prior to that he was a postdoctoral researcher in the Department of Physics at ETH-Zurich (Swiss Federal Institute of Technology). He received his Ph.D. from The Ohio State University in 2004.