采用超越单模近似,研究了纯光学势阱中自旋s=1的旋量BEC对单模的模式偏离效应.通过对有效哈密顿量的能量泛函变分,给出了模式偏离修正因子ε,并计算了模式偏离修正因子和分裂能随凝聚体粒子数N的变化关系.
We study the mode deviation effect of a spin-1 Bose-Einstein condensate with large number of atoms in optical trap beyond the single-mode approximation.Based on the effective Hamiltonian with nondegenerate level of the collective spin states,we get the mode deviation factor and explicitly calculate the level splitting energy as function of the atom number N.