Superfluid-Insulator Transition in a Commensurate One-Dimensional Bosonic System with Off-Diagonal DisorderPhysics Review Letters
AbstractWe study the nature of the superfluid-insulator quantum phase transition in a one-dimensional system of lattice bosons with off-diagonal disorder in the limit of a large integer filling factor. Monte Carlo simulations of two strongly disordered models show that the universality class of the transition in question is the same as that of the superfluid-Mott-insulator transition in a pure system. This result can be explained by disorder self-averaging in the superfluid phase and the applicability of the standard quantum hydrodynamic action. We also formulate the necessary conditions which should be satisfied by the stong-randomness universality class, if one exists.
Citation InformationK Balabanyan, Nikolai Prokof'ev and Boris Svistunov. "Superfluid-Insulator Transition in a Commensurate One-Dimensional Bosonic System with Off-Diagonal Disorder" Physics Review Letters Vol. 95 Iss. 5 (2005)
Available at: http://works.bepress.com/nikolai_prokofev/44/