Quantum critical phenomena in one-dimensional Bose systems

作者：G. G. Batrouni, Richard T. Scalettar, Gergely T. Zimányi · 发表于：Physical Review Letters · 年份：1990 · DOI：10.1103/physrevlett.65.1765 · 被引用次数：280 · 研究领域：Cold Atom Physics and Bose-Einstein Condensates、Physics of Superconductivity and Magnetism、Quantum many-body systems

We use quantum Monte Carlo techniques to study the critical properties of an interacting-boson model in one dimension. The phase diagram consists of a series of (Mott-) insulating phases at commensurate fillings and of a superfluid phase. From the critical behavior of the superfluid density and the compressibility, we measure the exponents \ensuremath{\nu} and z, which agree with predictions based on a scaling analysis.