NUMERICAL STUDY OF THE ONSET OF SUPERFLUIDITY IN 2-DIMENSIONAL, DISORDERED, HARD-CORE BOSONS

被引：58

作者：

RUNGE, KJ

机构：

[1] Lawrence Livermore National Laboratory, University of California, Livermore

来源：

PHYSICAL REVIEW B | 1992年 / 45卷 / 22期

关键词：

D O I：

10.1103/PhysRevB.45.13136

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页码：13136 / 13139

页数：4