Physics – Condensed Matter – Disordered Systems and Neural Networks
Scientific paper
2011-10-14
Physics
Condensed Matter
Disordered Systems and Neural Networks
(24 pages + 7 page appendix, 28 figures) This version has been accepted to PRB. We have acquired new data that resolves the co
Scientific paper
We study the zero temperature superfluid-insulator transition for a two-dimensional model of interacting, lattice bosons in the presence of quenched disorder and particle-hole symmetry. We follow the approach of a recent series of papers by Altman, Kafri, Polkovnikov, and Refael, in which the strong disorder renormalization group is used to study disordered bosons in one dimension. Adapting this method to two dimensions, we study several different species of disorder and uncover universal features of the superfluid-insulator transition. In particular, we locate an unstable finite disorder fixed point that governs the transition between the superfluid and a gapless, glassy insulator. We present numerical evidence that this glassy phase is the incompressible Mott glass and that the transition from this phase to the superfluid is driven by percolation-type process. Finally, we provide estimates of the critical exponents governing this transition.
Iyer Shankar
Pekker David
Refael Gil
No associations
LandOfFree
A Mott Glass to Superfluid Transition for Random Bosons in Two Dimensions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A Mott Glass to Superfluid Transition for Random Bosons in Two Dimensions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Mott Glass to Superfluid Transition for Random Bosons in Two Dimensions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-686876