Density dependence of the transition temperature in a homogeneous bose-einstein condensate
Density dependence of the transition temperature in a homogeneous bose-einstein condensate
复制标题
均匀玻色-爱因斯坦凝聚中转变温度的密度依赖性
DOI：
10.1103/physrevlett.84.2060
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发表时间：
1999
影响因子：
8.6
通讯作者：
Zassenhaus
中科院分区：
文献类型：
--
作者：
Reppy;Crooker;Hébral;Corwin;He;Zassenhaus
作为一个函数的4 He-Vycor系统中的粒子密度得到的转变温度数据与最近的理论计算3D玻色凝聚系统进行了比较。在低密度稀玻色气体区，我们发现，与理论一致，在转变温度的形式Δ T/T0 = γ（na（3））（1/3）的正位移。在较高密度下，对于相互作用参数na（3）的值，T（c）/T0的比值出现最大值，这与路径积分蒙特卡罗计算结果一致。
Transition temperature data obtained as a function of particle density in the 4He-Vycor system are compared with recent theoretical calculations for 3D Bose-condensed systems. In the low density dilute Bose gas regime we find, in agreement with theory, a positive shift in the transition temperature of the form DeltaT/T0 = gamma(na(3))(1/3). At higher densities a maximum is found in the ratio of T(c)/T0 for a value of the interaction parameter, na(3), that is in agreement with path-integral Monte Carlo calculations.