Phase transition of one dimensional bosons with strong disorder
  We study one dimensional disordered bosons at large commensurate filling. Using a real space renormalization group approach we find a new random fixed point which controls a phase transition from a superfluid to an incompressible Mott-glass. The transition can be tuned by changing the disorder distribution even with vanishing interactions. We derive the properties of the transition, which suggest that it is in the Kosterlitz-Thouless universality class. 
Ehud Altman, Yariv Kafri, Anatoli Polkovnikov (Harvard), Gil Refael   (KITP)