简谐势阱中非理想气体玻色爱因斯坦凝聚转变温度的数值研究

Numerical research on critical temperature of Bose-Einstein condensation for gas with interaction in harmonic trap

用数值计算的方法研究了简谐势阱中非理想气体的玻色 爱因斯坦凝聚情况 .通过计算能级的分布 ,用图形的方式给出了考虑相互作用时 ,简谐势阱中体系转变温度相对无相互作用体系转变温度的变化趋势 对于存在排斥作用的体系 ,转变温度升高 ;对于存在吸引作用的体系 ,转变温度降低 .

In this article we study Bose-Einstein condensation of the gas with interactions in a harmonic trap using a numerical method. The distribution of the energy states was given, by which the author calculated the shift of the critical temperature and made a comparison with the situation without interactions. We have obtained a positive shift of critical temperature for systems with repulsive interaction, and a negative one for systems with attractive interaction.