论文标题
被困的骨偶联混合物的偶极模式：sum-rule方法的命运
Dipole modes of a trapped bosonic mixture: Fate of the sum-rule approach
论文作者
论文摘要
我们通过将Sum-Rule方法的预测与完整的GROSS-PITAEVSKII（GP）计算进行比较，我们对谐波陷阱中异核骨化混合物的偶极模式进行了一般讨论。然而，在混合物在平均场级别上混乱且稳定的交互范围内，$ g_ {12}^2 <g_ {11} g_ {22} $，我们发现在某些机制中，总和规则显示出与GP解决方案的重大偏差。我们从Ehrenfest方法方面为这种行为提供了一种解释，我们表明这与偶极子激发的总和规则方法相同。
We present a general discussion of the dipole modes of a heteronuclear bosonic mixture in a harmonic trap by comparing the prediction of the sum-rule approach with full Gross-Pitaevskii (GP) calculations. Yet in the range of interaction in which the mixture is miscible and stable at the mean field level, $g_{12}^2<g_{11}g_{22}$, we find that there are regimes where the sum rules displays significant deviations from the GP solution. We provide an interpretation for this behavior in terms of the Ehrenfest approach, which we show to be equivalent to the sum-rule approach for dipole excitations.
