Gross-Pitaevskii平均场外的相互作用玻色子
Interacting Bosons beyond the Gross-Pitaevskii Mean-Field
摘要：
由冷相互作用玻色子组成的系统显示出有趣的集体现象，如玻色-爱因斯坦凝聚或超流性，目前在凝聚态和原子物理学中进行研究。特别令人感兴趣的是非理想玻色子，表现出很强的相关性和空间局域化效应。在这里，我们分析了一个二维玻色系统的Hartree-Fock型近似的基态，首先介绍了Romanovsky等人。{ \bf 93}，230405（2004）]。我们将这种方法应用到一个一维带电玻色子系统，并分析了强耦合下的行为。
英文摘要：
Systems consisting of cold interacting bosons show interesting collective phenomena such as Bose-Einstein condensation or superfluidity and are currently studied in condensed matter and atomic physics. Of particular interest are nonideal bosons which exhibit strong correlation and spatial localization effects. Here we analyse the ground-state of a two-dimensional Bose system with a Hartree-Fock type approximation that was first introduced by Romanovsky et al. [Phys. Rev. Lett. {\bf 93}, 230405 (2004)]. We apply this method to a one dimensional system of charged bosons and analyze the behaviour at strong coupling.
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