Reseach interests
I am interested in emergent phenomena in condensed matter and many body physics, when the behavior of manybody systems cannot be reduced to a sum of their constituent parts. Common methods used in my work are the nonperturbative techniques of manybody theory and quantum field theory. My work has applications within the new field of the ultracold atomic gases, in the more conventional condensed matter physics, as well as to the mathematical aspects of quantum field theory.
Topics of current interest

Degenerate Quantum Gases
Recent talks: Prospects of realizing topological quantum computers with pwave degenerate atomic gases, Paris, 2008
 Jerusalem Winter School Lectures, Hebrew University of Jerusalem, 2008

Bosons in a random environment
Recent talks: Excitations in random elastic media, Lorentz Center, 2007
 Excitations in random elastic media, Lorentz Center, 2007

Conformal field theory of critical systems with quenched disorder
Recent talks: Logarithmic operators at c=0, ETH Zurich, 2009
 Logarithmic operators at c=0, ETH Zurich, 2009

Nonequilibrium phenomena in manybody systems
Recent talks: Many particle generalization of the LandauZener problem, Los Alamos, 2009
 Many particle generalization of the LandauZener problem, Los Alamos, 2009

Topological insulators and topological states of matter
Recent talks: SU(N) magnetism with cold atoms and chiral spin liquids, Cologne (2010)
 Single particle Green's functions and interacting topological insulators, Nordita (2011)