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arXiv 2011.10032cond-mat.quant-gas
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电介质表面上带电玻色子系统中的玻色-爱因斯坦凝聚

Aspects of Bose-Einstein condensation in a charged boson system over the dielectric surface

I. V. Lukin, A. G. Sotnikov, Yu. V. Slyusarenko

摘要:

本文从理论上研究了低温下由带电玻色子(离子)组成的气体在平坦介质表面上形成玻色-爱因斯坦凝聚体的倾向。为了系统的稳定性,引入了一个额外的外部电场,它使电荷保持在介质表面。的形式主义是在一个自洽场的方法,它结合了准经典描述的维格纳分布函数和量子力学的方法,采用Gross-Pitaevskii方程的框架。我们预言了一个具有玻色-爱因斯坦凝聚体的态的形成,并确定了该系统的近临界物理特性。结果表明,在这些条件下,热和冷凝组分成为空间分离。我们讨论了发展的半经典方法的局限性和前景的纯量子力学治疗的问题。

英文摘要:

We study theoretically a gas consisting of charged bosons (ions) over the flat dielectric surface at low temperatures and its tendency to form a state with a Bose-Einstein condensate. For the stability of a system, an additional external electric field, which keeps charges at the dielectric surface, is introduced. The formalism is developed in the framework of a self-consistent-field approach, which combines the quasiclassical description in terms of the Wigner distribution functions and the quantum-mechanical approach by employing the Gross-Pitaevskii equation. We predict a formation of the state with a Bose-Einstein condensate and determine the near-critical physical characteristics of the system. It is shown that the thermal and condensate components become spatially separated under these conditions. We discuss the limitations of the developed semiclassical approach and prospects for the pure quantum-mechanical treatment of the problem.

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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