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arXiv 1011.4259cond-mat.quant-gascond-mat.str-el
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一维格点硬核玻色子系统中噪声关联的标度性

Scaling of noise correlations in one-dimensional-lattice-hard-core-boson systems

Kai He, Marcos Rigol

摘要:

本文研究了一维格点中硬核玻色子系统的噪声关联。我们使用一个精确的数值方法的基础上玻色费米映射和斯莱特行列式的属性。我们专注于超流和绝缘相,这是在均匀晶格,周期2超晶格和均匀分布的随机对角无序产生的系统尺寸的噪声相关的标度。对于超流相,领先的贡献示出表现出与系统大小成比例的密度无关的缩放,而第一子领先项表现出依赖于密度的幂律指数。

英文摘要:

Noise correlations are studied for systems of hard-core bosons in one-dimensional lattices. We use an exact numerical approach based on the Bose-Fermi mapping and properties of Slater determinants. We focus on the scaling of the noise correlations with system size in superfluid and insulating phases, which are generated in the homogeneous lattice, with period-two superlattices and with uniformly distributed random diagonal disorder. For the superfluid phases, the leading contribution is shown to exhibit a density-independent scaling proportional to the system size, while the first subleading term exhibits a density-dependent power-law exponent.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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