Critical Properties of the Superfluid—Bose-Glass Transition in Two Dimensions
Critical Properties of the Superfluid—Bose-Glass Transition in Two Dimensions
We investigate the superfluid (SF) to Bose-glass (BG) quantum phase transition using extensive quantum Monte Carlo simulations of two-dimensional hard-core bosons in a random box potential. T=0 critical properties are studied by thorough finite-size scaling of condensate and SF densities, both vanishing at the same critical disorder Wc=4.80(5). Our results …