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

Shiwei Zhang·N. Kawashima·J. Carlson·J. E. Gubernatis
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Abstract

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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Shiwei Zhang, N. Kawashima, J. Carlson, J. E. Gubernatis. 1994-09-26. Quantum simulations of the superfluid-insulator transition for two-dimensional, disordered, hard-core bosons. https://doi.org/10.1103/physrevlett.74.1500

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