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首页> 外文期刊>Physica, B. Condensed Matter >The condensation of ideal Bose gas in a gravitational field
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The condensation of ideal Bose gas in a gravitational field

机译：理想Bose气体在重力场中的冷凝

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摘要

Bose-Einstein condensation of two- and three-dimensional boson gases confined in the one-dimensional gravitational field is investigated. Using the semiclassical approximation method, the expressions for the BEC transition temperature, condensate fraction, heat capacity and the entropy of the system are obtained. The heat capacities of the systems with D=1, 2, 3 (D is the dimension) at the critical temperature are discussed. We find that for the 1-D and 2-D boson systems, the heat capacities are continuous, but for the 3-D case there is a gap at the critical temperature ~(Tc). The entropies of the systems with D=1, 2, 3 are also studied in detail. It is found that the entropies increase with the increasing of the temperature T.
机译：研究了局限在一维重力场中的二维和三维玻色子气体的玻色-爱因斯坦凝聚。使用半经典近似方法，获得了系统的BEC转变温度，冷凝水分率，热容量和熵的表达式。讨论了在临界温度下D = 1、2、3（D为尺寸）的系统的热容量。我们发现，对于一维和二维玻色子系统，热容量是连续的，但对于三维玻色子，在临界温度〜（Tc）处存在间隙。还详细研究了D = 1、2、3的系统的熵。发现熵随着温度T的增加而增加。

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