Correlations in a two-dimensional Bose gas with long-range interaction
Correlations in a two-dimensional Bose gas with long-range interaction
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DOI：
10.1209/0295-5075/87/27010
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发表时间：
2009-07-01
期刊：
影响因子：
1.8
通讯作者：
Rapaport, R.
中科院分区：
文献类型：
--
作者：
Laikhtman, B.;Rapaport, R.
我们以半导体双层中的二维偶极玻色子与激子作为具体情况，在整个温度浓度区域内研究了相关性。我们表明，在低浓度下，玻色简并性伴随着强烈的多粒子相关性，并且系统表现为玻色液体。在高浓度下，排斥力会抑制量子相干性，并且系统在温度低于玻色气体典型温度的情况下表现为经典液体。粒子的相互作用能是测量相关性的敏感工具。该理论可以应用于其他具有扩展相互作用的玻色子系统。版权所有 c (C) EPLA，2009
We study the correlations of two-dimensional dipolar bosons with excitons in semiconductor bilayers as a specific case, in the whole temperature-concentration region. We show that at low concentrations, the Bose degeneracy is accompanied by strong multi-particle correlations and the system behaves as a Bose liquid. At high concentrations the repulsion suppresses quantum coherence and the system behaves as a classical liquid down to a temperature lower than typical for a Bose gas. The interaction energy of the particles is a sensitive tool for a measurement of the correlations. This theory can apply to other systems of bosons with extended interaction. Copyright c (C) EPLA, 2009