Matthew Kleban is a theoretical physicist working on string theory and early-universe cosmology, with research interests that include the quantum physics of black holes, gravitational singularities, and cosmic inflation. He is a professor and also Director of the Center for Cosmology and Particle Physics at New York University where he has been on the faculty since 2006, holds a Ph.D. in physics from Stanford University (2003), and was a member at the Institute for Advanced Study in Princeton, New Jersey (2003-2006 and 2012-2013). Recently his work has focused on the possibility of testing theories of fundamental physics with observational cosmology, specifically the multiverse of string theory and the potentially observable traces left by cosmic bubble collisions in the cosmic microwave background radiation.
