论文标题
在两个组分的玻色酿凝结物中，来自模拟自旋麦格尔基的超级语音发射
Superradiant phononic emission from the analog spin ergoregion in a two-component Bose-Einstein condensate
论文作者
论文摘要
我们利用模拟重力的角度来获得对两个组成部分原子冷凝物中量化涡流的存在的物理理解，以及它们与重力旋转巨大物体的不稳定性的关系。除了与涡流拆分有关的局部不稳定性外，还发现了显示动态不稳定模式的配置，这些模式还可以在涡旋核心之外延伸。在这种情况下，超级散射过程涉及声子发射到旋转模式的较宽范围内，因此物理学最类似于旋转的巨大物体之一。我们的结果证实了两组分解的潜力，这是在不同引力兴趣方面的旋转空间时间的模拟模型。
We make use of an analog gravity perspective to obtain a physical understanding of hydrodynamic instabilities stemming from the presence of quantized vortices in two-component atomic condensates and of their relation to ergoregion instabilities of rotating massive objects in gravitation. In addition to the localized instabilities related to vortex splitting, configurations displaying dynamically unstable modes that extend well outside the vortex core are found. In this case, the superradiant scattering process involves phonon emission into the much wider ergoregion of spin modes, so the physics most closely resembles the one of rotating massive objects. Our results confirm the potential of two-component condensates as analog models of rotating space-times in different regimes of gravitational interest.
