论文标题
扁平的偶极二元冷凝物的稳定性：自旋旋转的出现
Stability of a flattened dipolar binary condensate: emergence of the spin roton
论文作者
论文摘要
我们为平面陷阱中两个组成型偶极冷凝物的两个组成偶性冷凝物开发理论。使用数值溶液和一个变分理论，我们为激发光谱求解，并确定有利于密度 - 和自旋rot子激发的模式。我们表征了可以通过广泛的参数制度出现的各种不稳定性，并为稳定相图提供了结果。重要的是，这使我们能够确定由旋转旋转激发的软化驱动的新型旋转不良性转变的参数状态。
We develop theory for a two-component miscible dipolar condensate in a planar trap. Using numerical solutions and a variational theory we solve for the excitation spectrum and identify regimes where density- and spin-roton excitations are favored. We characterize the various instabilities that can emerge in this system over a wide parameter regime and present results for the stability phase diagram. Importantly this allows us to identify the parameter regimes where a novel roton-immiscibility transition can occur, driven by the softening of the spin roton excitation.
