论文标题
平面超流体中的质量驱动涡流冲突
Mass-driven vortex collisions in flat superfluids
论文作者
论文摘要
量子涡旋通常被赋予有效的惯性质量，例如由于其核心中的巨大颗粒。这种“巨大的涡流”显示出超出超级流体涡流动力学的标准图片的新现象，在该动力学中，质量被忽略了。在这项工作中，我们证明了允许巨大的涡流碰撞，而不是它们的无质量对应物。我们提出了一个方案，以成对的量子涡旋生成可控制的，可重复的，确定性的碰撞事件。我们演示了两个质量驱动的基本过程：（i）两种反旋转涡旋的an灭，以及（ii）两个共旋转涡旋的合并，从而指出了支持可压缩至可压缩的动能转换的新机制，以及在平面超级富集中稳定的涡流稳定性。
Quantum vortices are often endowed with an effective inertial mass, due, for example, to massive particles in their cores. Such "massive vortices" display new phenomena beyond the standard picture of superfluid vortex dynamics, where the mass is neglected. In this work, we demonstrate that massive vortices are allowed to collide, as opposed to their massless counterparts. We propose a scheme to generate controllable, repeatable, deterministic collisional events in pairs of quantum vortices. We demonstrate two mass-driven fundamental processes: (i) the annihilation of two counter-rotating vortices and (ii) the merging of two co-rotating vortices, thus pointing out new mechanisms supporting incompressible-to-compressible kinetic energy conversion, as well as doubly-quantized vortices stabilization in flat superfluids.
