The interplay between disorder and interaction in a lattice bosonic system, at an integer filling, is by no means a mere synergy between Mott and Anderson localization scenarios. We prove a theorem resolving a 20-year-old controversy concerning the topology of the groundstate phase diagram of the system (featuring three phases: superfluid, Mott insulator and Bose glass). Numerically, we reveal an accurate--and rather curious--phase diagram of the 3D disordered Bose Hubbard model. The numeric results are perfectly consistent with our analytic findings.
Graduated from Moscow Engineering Physics Institute (1986).
Researcher at Kurchantov Institute (Moscow, Russia) since 1986.
Ph.D. on Bose-Einstein condensation in ultra-cold atomic gases (supervisors: Yuri Kagan and Gora Shlyapnikov), Kurchtov Institute, 1990.
At the moment: Professor of physics at the University of Massachusetts, Amherst.
(Started at UMass as an assoc. prof. in 2003).
Research interests: Ultracold atomic systems. Superfluid turbulence. Quantum phase transitions. Supersolidity. Theory and practice of quantum and classical Monte Carlo.