...
首页> 外文期刊>Annals of Physics >Motion of Quantized Vortices as Elementary Objects
【24h】

Motion of Quantized Vortices as Elementary Objects

机译:量化涡流作为基本对象的运动

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       

摘要

The general local, nondissipative equations of motion for a quantized vortex moving in an uncharged laboratory superfluid are derived from a relativistic, co-ordinate invariant framework having vortices as its elementary objects in the form of stable topological excitations. This derivation is carried out for a pure superfluid with an isotropic gap at the absolute zero of temperature, on the level of a hydrodynamic, collective co-ordinate description. In the formalism, we use as fundamental ingredients that particle number as well as vorticity are conserved and that the fluid is perfect. No assumptions are involved as regards the dynamical behaviour of the order parameter. The interaction of the vortex with the background fluid, representing the Magnus force, and with itself via phonons, giving rise to the hydrodynamic vortex mass, are separated. For a description of the motion of the vortex in a dense laboratory superfluid such as helium II, two limits have to be considered: The nonrelativistic limit for the superfluid background is taken, and the motion of the vortex is restricted to velocities much less than the speed of sound. The canonical structure of vortex motion in terms of the collective co-ordinate is used for the quantization of this motion.
机译:在不带电的实验室超流体中,定量涡旋运动的一般局部非耗散运动方程式是从相对论的坐标不变框架中得出的,该框架以稳定拓扑激发的形式将涡旋作为其基本对象。此推导是针对纯超流体进行的,该超流体在温度绝对为零的情况下具有各向同性的间隙,并且是在流体力学的集体坐标描述的水平上进行的。在形式主义中,我们使用基本成分来保持粒子数和涡度,并且流体是完美的。订单参数的动态行为不涉及任何假设。涡流与代表马格努斯力的背景流体之间的相互作用,以及通过声子本身与声子之间的相互作用被分离,从而产生了流体动力学涡旋质量。为了描述稠密的实验室超流体(例如氦II)中涡旋的运动,必须考虑两个限制:超流体本底的非相对论性限制,并且涡旋的运动被限制为速度远小于声音的速度。根据集合坐标的涡旋运动的规范结构被用于该运动的量化。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号