Energy estimates and symmetry breaking in attractive Bose-Einstein condensates with ring-shaped potentials
Energy estimates and symmetry breaking in attractive Bose-Einstein condensates with ring-shaped potentials
复制标题
具有环形势的有吸引力的玻色-爱因斯坦凝聚体的能量估计和对称性破缺
DOI:
10.1016/j.anihpc.2015.01.005
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发表时间:
2014-06
影响因子:
1.9
通讯作者:
Huan-Song Zhou
中科院分区:
文献类型:
--
作者:
Yujin Guo;Xiaoyu Zeng;Huan-Song Zhou
This paper is concerned with the properties of L 2-normalized minimizers of the Gross–Pitaevskii (GP) functional for a two-dimensional Bose–Einstein condensate with attractive interaction and ring-shaped potential. By establishing some delicate estimates on the least energy of the GP functional, we prove that symmetry breaking occurs for the minimizers of the GP functional as the interaction strength a> 0 approaches a critical value a⁎, each minimizer of the GP functional concentrates to a point on the circular bottom of the potential well and then is non-radially symmetric as a↗ a⁎. However, when a> 0 is suitably small we prove that the minimizers of the GP functional are unique, and this unique minimizer is radially symmetric.
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