中国物理B ›› 2009, Vol. 18 ›› Issue (11): 4734-4737.doi: 10.1088/1674-1056/18/11/021
徐岩1, 陈兵1, 李照鑫1, 熊祖周2, 谭磊2
Xu Yan(徐岩)a), Xiong Zu-Zhou(熊祖周)b)†, Chen Bing(陈兵)a), Li Zhao-Xin(李照鑫)a), and Tan Lei(谭磊)b)
摘要: In this paper, with the full field operator \hat ψ expressed in terms of a particle-number-conserving mean-field ansatz, we investigate the dynamical behaviour of Bose--Einstein condensates from microscopic physics. Including the first-order term correction from single-particle excitation and the remaining higher-order term correction from collective excitations simultaneously, we obtain the formulation for a closed local expression of quantum backreaction Q, and discuss the influence on static Bose--Einstein condensates. Even though the quantum backreaction is small, it still has some influence on its dynamics.
中图分类号: (Quantum ensemble theory)