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大N近似下玻色-爱因斯坦凝聚体中单个涡旋态的解
A novel solution to singly quantized vortex in big N Bose-Einstein condensate
【摘要】 给出了大N近似下轴对称、扁椭球状玻色 爱因斯坦凝聚体在轴对称各向异性谐振子势阱中单个涡旋态的一个近似解析波函数 ,并利用能量泛函变分的方法确定了待定参数C与凝聚体总粒子数N和凝聚体形状因子λ的关系 .C随N(或λ)的变化非常缓慢 ,在N和λ很大时 ,C趋于稳定值 0 32 1 6 4 6 .
【Abstract】 An approximate analytical wave function is presented for an oblate ellipsoidal big N Bose_Einstein condensate(BEC) in axi_symmetric harmonic traps. The relationship between the undetermined parameter C and the total particle number N , the aspect ratio λ of the BEC is obtained by varying the energy functional. The parameter C varies extremely slowly versus N (or λ ), and it becomes a fixed value 0.321646 when both N and λ are very large.
【关键词】 玻色-爱因斯坦凝聚;
GP泛函;
涡旋态;
【Key words】 Bose-Einstein condensate; Gross-Pitaevskii(GP) functional; vortex state;
【Key words】 Bose-Einstein condensate; Gross-Pitaevskii(GP) functional; vortex state;
【基金】 中国科学院“百人计划”基金资助的课题~~
- 【文献出处】 物理学报 ,Acta Physica Sinica , 编辑部邮箱 ,2004年09期
- 【分类号】O562
- 【被引频次】6
- 【下载频次】130