The stability of Bose-Einstein condensates in a two-dimensional shallow trap

The stability of Bose-Einstein condensates in a

two-dimensional shallow trap

Zhou Xiao-Yan;Mu Ai-Xia;Xue Ju-Kui

【期刊名称】《中国物理：英文版》 【年(卷),期】2007(016)011

【摘要】The stability of Bose-Einstein condensates (BECs) loaded into a two-dimensional shallow harmonic potential well is studied. By using the variational method, the ground state properties for interacting BECs in the shallow trap are discussed. It is shown that the possible stable bound state can exist. The depth of the shallow well plays an important role in stabilizing the BECs.The stability of BECs in the shallow trap with the periodic modulating of atom interaction by using the Feshbach resonance is also discussed. The results show that the collapse and diffusion of BECs in a shallow trap can be controlled by the temporal modulation of the scattering length. 【总页数】7页(3197-3203)

【关键词】Bose-Einstein condensates, shallow harmonic potential well, stability

【作者】Zhou Xiao-Yan;Mu Ai-Xia;Xue Ju-Kui

【作者单位】College of Physics and Electronics Engineering, Northwest Normal University, Lanzhou 730070, China;College of Physics and Electronics Engineering, Northwest Normal University, Lanzhou 730070,