论文标题
超级流体和BEC湍流中本地镜像对称性的自发破坏
Spontaneous breaking of local mirror symmetry in superfluid and in BEC turbulence
论文作者
论文摘要
流体湍流中局部镜像对称性（平等）的自发断裂存在固有的机制。一个很好的例子是基于Inviscid Vortex相互作用的Kerr机制。这种相互作用可能导致局部相邻区域的出现具有强烈的相对签名的螺旋性，而由于全球镜像对称性，全球（净）螺旋度仍然保持零。使用直接数值模拟和实验室测量结果表明，局部镜像对称性的自发断裂可以主导超流体氦II和Bose-Einstein冷凝物湍流中的湍流动力学。螺旋分布式混乱的概念已用于此目的。
There exist inherent mechanisms of spontaneous breaking of local mirror symmetry (parity) in fluid turbulence. A good example is Kerr's mechanism based on the inviscid vortex interactions. Such interactions can result in the appearance of the local adjacent regions with strong oppositely signed helicity, while the global (net) helicity still remains zero due to the global mirror symmetry. It is shown, using results of direct numerical simulations and laboratory measurements, that the spontaneous breaking of local mirror symmetry can dominate turbulent dynamics in the superfluid helium II and in the Bose-Einstein condensate turbulence. The notion of helical distributed chaos has been used for this purpose.
