Phys. Rev. B 45, 13136–13139 (1992)Numerical study of the onset of superfluidity in two-dimensional, disordered, hard-core bosons
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. © 1992 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.45.13136
DOI:
10.1103/PhysRevB.45.13136
PACS:
74.70.Mq, 74.75.+t, 75.10.Nr, 67.40.-w
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