Quantum Simulations of the Superfluid-Insulator Transition for Two-Dimensional, Disordered, Hard-Core Bosons

1994/09/26 by Shiwei Zhang, Naoki Kawashima, N. Kawashima +2 · 7 citations
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Physics of Superconductivity and Magnetism #Quantum, superfluid, helium dynamics #cond-mat

paper · pdf · doi:10.1103/physrevlett.74.1500

published as Phys. Rev. Lett. 74, 1500 (1995) · Revtex, 10 pages, 3 figures (postscript files attached at end, separated by %%%%%% Fig # %%%%%, where # is 1-3). LA-UR-94-2708

arxiv created 1994/09/26 · openalex publication_date 1995/02/27 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We introduce two quantum Monte Carlo algorithms and employ them to study the superfluid-insulator transition in a two-dimensional system of hard-core bosons. One of the algorithms is appropriate for zero temperature and is based upon the Green's function Monte Carlo method; the other is an extension of the finite-temperature world-line cluster method. In each case we find that the dynamical exponent is consistent with the theoretical prediction of z\phantom\rule0ex0ex=\phantom\rule0ex0ex2 by Fisher and co-workers.

Citations

• Loop algorithms for quantum simulations of fermion models on lattices

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