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arXiv 1107.2428cond-mat.quant-gas
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二元原子混合物的玻璃态行为

Glassy behavior in a binary atomic mixture

Bryce Gadway, Daniel Pertot, Jeremy Reeves, Matthias Vogt, Dominik Schneble

摘要:

我们的实验研究一维,晶格调制玻色气体中存在的不相关的无序势形成的局域杂质原子,并比较的情况下,相关的准无序形成的无公度晶格。虽然这两种无序实现的影响在强相互作用机制中是相当深的,都显示出玻色玻璃形成的特征,但我们发现在超流到绝缘体的过渡附近存在显着差异。在这个过渡区中,我们观察到,随机的,不相关的障碍,导致转移的临界晶格深度的故障的运输,而不是相关的准障碍的情况下,没有看到这样的转变。我们的研究结果,这是一致的,与最近的预测相互作用玻色子在一维,说明无序原子系统中的重要作用的相关性。

英文摘要:

We experimentally study one-dimensional, lattice-modulated Bose gases in the presence of an uncorrelated disorder potential formed by localized impurity atoms, and compare to the case of correlated quasi-disorder formed by an incommensurate lattice. While the effects of the two disorder realizations are comparable deeply in the strongly interacting regime, both showing signatures of Bose glass formation, we find a dramatic difference near the superfluid-to-insulator transition. In this transition region, we observe that random, uncorrelated disorder leads to a shift of the critical lattice depth for the breakdown of transport as opposed to the case of correlated quasi-disorder, where no such shift is seen. Our findings, which are consistent with recent predictions for interacting bosons in one dimension, illustrate the important role of correlations in disordered atomic systems.

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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