Disordered Bosons in One Dimension: From Weak- to Strong-Randomness Criticality
Disordered Bosons in One Dimension: From Weak- to Strong-Randomness Criticality
We investigate the superfluid-insulator quantum phase transition of one-dimensional bosons with off-diagonal disorder by means of large-scale Monte Carlo simulations. For weak disorder, we find the transition to be in the same universality class as the superfluid-Mott insulator transition of the clean system. The nature of the transition changes for …