论文标题
声音和电磁波中的蓬代力，斯托克斯漂移和动量
Ponderomotive Forces, Stokes Drift, and Momentum in Acoustic and Electromagnetic Waves
论文作者
论文摘要
我们揭示了经典波浪物理学中三个重要现象之间的普遍联系：（i）作用在振荡波场中培养基颗粒上的浮子力，（ii）自由培养基在波场中的stokes在波场中的stokes漂移，以及（iii）介质中的规范波动量。我们分析了（a）气体或流体中的纵向声波的这些现象，以及（b）与等离子体或金属中电子相互作用的横向电磁波。在这两种情况下，假设准单调但任意不均匀的波场，浮动力量之间的连接，Stokes漂移速度，动能和中等粒子携带的规范波动量之间的连接是由相同的简单表达式给出的。这阐明了这些现象的性质，它们的精细相互作用，并且对于在各种波浪中的动态运输现象中应用很有用。
We reveal universal connections between three important phenomena in classical wave physics: (i) the ponderomotive force acting on the medium particles in an oscillatory wavefield, (ii) the Stokes drift of free medium particles in a wave field, and (iii) the canonical wave momentum in a medium. We analyse these phenomena for (a) longitudinal sound waves in a gas or fluid and (b) transverse electromagnetic waves interacting with electrons in a plasma or metal. In both cases, assuming quasi-monochromatic yet arbitrarily inhomogeneous wavefields, the connections between the ponderomotive force, Stokes drift velocity, kinetic energy, and canonical wave momentum carried by the medium particles are given by the same simple expressions. This sheds light on the nature of these phenomena, their fine interplay, and can be useful for applications to dynamical transport phenomena in various types of waves.
