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arXiv 0909.3693cond-mat.str-elcond-mat.quant-gas
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玻色量子霍尔效应的密度矩阵重整化群

Density matrix renormalization group for bosonic quantum Hall effect

D. L. Kovrizhin

摘要:

我们发展了一种密度矩阵重整化群方法来研究快速转动玻色子的量子霍尔分数。在本文中,我们提出了一个讨论的方法,我们得到的结果在三个不同的情况下的窄通道,圆柱和球形几何形状。在窄通道的情况下,这是有关的各向异性限制陷阱在极限的极快的旋转,我们发现了一系列的零温度相变在强相互作用制度作为玻色子之间的相互作用强度的函数。我们计算能量和密度分布的不同填充分数的圆柱体和比较的方法在圆柱体和球的几何形状的收敛速度。

英文摘要:

We developed a density matrix renormalization-group technique to study quantum Hall fractions of fast rotating bosons. In this paper we present a discussion of the method together with the results which we obtain in three distinct cases of the narrow channel, cylinder and spherical geometries. In the narrow channel case, which is relevant to anisotropic confining traps in the limit of extremely fast rotation, we find a series of zero-temperature phase transitions in the strongly interacting regime as a function of the interaction strength between bosons. We compute energies and density profiles for different filling fractions on a cylinder and compare the convergence rates of the method in the cylinder and a sphere geometries.

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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