论文标题
在介电表面上带电的玻色子系统中bose-Einstein凝结的各个方面
Aspects of Bose-Einstein condensation in a charged boson system over the dielectric surface
论文作者
论文摘要
从理论上讲，我们在低温下在平坦的介电表面上研究了由带电的玻色子（离子）组成的气体及其倾向于与玻色子凝结物形成状态的趋势。为了使系统的稳定性，引入了一个额外的外部电场，该电场在介电表面保持电荷。形式主义是在一种自洽场方法的框架中开发的，该方法通过使用毛pitaevskii方程来从Wigner分布函数和量子机械方法方面结合了准经典描述。我们可以预测使用Bose-Einstein冷凝物的状态形成，并确定系统的近临界物理特征。结果表明，在这些条件下，热和冷凝物成分在空间上分离。我们讨论了已发达的半经典方法的局限性以及对问题的纯量子力学处理的前景。
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.
