1205.2105 (Zoran Ristivojevic et al.)

Phase transition of interacting disordered bosons in one dimension    [PDF]

Zoran Ristivojevic, Aleksandra Petković, Pierre Le Doussal, Thierry Giamarchi

Interacting bosons generically form a superfluid state. In the presence of disorder it can get converted into a compressible Bose glass state. Here we study such transition in one dimension at moderate interaction using bosonization and renormalization group techniques. We derive the two-loop scaling equations and discuss the phase diagram. We find that the correlation functions at the transition are characterized by universal exponents in a finite region around the fixed point.

View original: http://arxiv.org/abs/1205.2105