Quantum simulations of the superfluid-insulator transition for two-dimensional, disordered, hard-core bosons

Details Quantum simulations of the superfluid-insulator transition for two-dimensional, disordered, hard-core bosons Quantum simulations of the superfluid-insulator transition for two-dimensional, disordered, hard-core bosons

1994-09-26

arxiv.org/abs/cond-mat/9409112v1

Phys. Rev. Lett. 74, 1500 (1995)

Physics

Condensed Matter

Revtex, 10 pages, 3 figures (postscript files attached at end, separated by %%%%%% Fig # %%%%%, where # is 1-3). LA-UR-94-2708

Scientific paper

10.1103/PhysRevLett.74.1500

We introduce two novel quantum Monte Carlo methods and employ them to study the superfluid-insulator transition in a two-dimensional system of hard-core bosons. One of the methods is appropriate for zero temperature and is based upon Green's function Monte Carlo; the other is a finite-temperature world-line cluster algorithm. In each case we find that the dynamical exponent is consistent with the theoretical prediction of $z=2$ by Fisher and co-workers.

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