Numerical study of the onset of superfluidity in two-dimensional, disordered, hard-core bosons
- 1 June 1992
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 45 (22) , 13136-13139
- https://doi.org/10.1103/physrevb.45.13136
Abstract
The ground-state of hard-core bosons in a random one-body potential is studied numerically to observe the transition from superfluid to insulating ‘‘Bose glass’’ phase. Finite-size scaling analyses are performed to estimate the transition point and critical exponents. The dynamical critical exponent is z=1.95±0.25 and is consistent with the prediction of Fisher et al. [Phys. Rev. B 40, 546 (1989)]. Values for other exponents and preliminary results regarding the universal conductivity are presented.Keywords
This publication has 30 references indexed in Scilit:
- Superfluid-insulator transition in disordered boson systemsPhysical Review Letters, 1991
- Localization in interacting, disordered, Bose systemsPhysical Review Letters, 1991
- Mott and Superfluid Transitions in a Strongly Interacting Lattice Boson SystemEurophysics Letters, 1991
- Quantum critical phenomena in one-dimensional Bose systemsPhysical Review Letters, 1990
- Magnetic-field-tuned superconductor-insulator transition in two-dimensional filmsPhysical Review Letters, 1990
- Dimensionality expansion for the dirty-boson problemPhysical Review B, 1989
- Onset of superconductivity in the two-dimensional limitPhysical Review Letters, 1989
- Disorder and the Superfluid Transition in LiquidPhysical Review Letters, 1988
- Anderson localization and interactions in one-dimensional metalsPhysical Review B, 1988
- Localization and Interaction in One-Dimensional Quantum FluidsEurophysics Letters, 1987