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arXiv 0707.4113cond-mat.dis-nncond-mat.mes-hall
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无序二维光晶格中超冷玻色子的平均场描述

Mean-field description of ultracold Bosons on disordered two-dimensional optical lattices

P. Buonsante, Francesco Massel, Vittorio Penna, Alessandro Vezzani

摘要:

本文描述了玻色原子超冷气体在二维光晶格中无序引起的性质,光晶格具有抛物势的全局约束。我们的分析是集中在空间分布的各个阶段,特别是专注于超流性质的系统作为外部参数和无序振幅的函数。特别是,它示出如何无序可以抑制超流性,同时部分地保持系统的一致性。

英文摘要:

In the present paper we describe the properties induced by disorder on an ultracold gas of Bosonic atoms loaded into a two-dimensional optical lattice with global confinement ensured by a parabolic potential. Our analysis is centered on the spatial distribution of the various phases, focusing particularly on the superfluid properties of the system as a function of external parameters and disorder amplitude. In particular, it is shown how disorder can suppress superfluidity, while partially preserving the system coherence.

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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