含时几何中正交偶极矩间的偶极-偶极相互作用
Dipole-dipole interaction between orthogonal dipole moments in time-dependent geometries
摘要：
在相邻的两个原子中，偶极-偶极相互作用可以耦合具有正交偶极矩的跃迁。这种正交耦合解释了许多有趣的效应，但强烈依赖于设置的几何形状。在这里，我们讨论了几个感兴趣的设置，其中的几何形状是不固定的，如粒子在陷阱或气体，通过平均在不同的几何形状。两种平均方法进行了比较。在第一种方法中，假设内部电子演化比几何变化快得多，而在第二种方法中，则相反。我们发现，正交耦合通常生存，甚至广泛的平均在不同的几何形状，虽然定性不同的结果为两种平均方法。通常，一维和二维平均范围建模，例如，低维气体，是最有前途的模型系统。
英文摘要：
In two nearby atoms, the dipole-dipole interaction can couple transitions with orthogonal dipole moments. This orthogonal coupling accounts for a number of interesting effects, but strongly depends on the geometry of the setup. Here, we discuss several setups of interest where the geometry is not fixed, such as particles in a trap or gases, by averaging over different sets of geometries. Two averaging methods are compared. In the first method, it is assumed that the internal electronic evolution is much faster than the change of geometry, whereas in the second, it is vice versa. We find that the orthogonal coupling typically survives even extensive averaging over different geometries, albeit with qualitatively different results for the two averaging methods. Typically, one- and two-dimensional averaging ranges modelling, e.g., low-dimensional gases, turn out to be the most promising model systems.
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