Nonreciprocal response of a two-dimensional fluid with odd viscosity
Nonreciprocal response of a two-dimensional fluid with odd viscosity
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DOI：
10.1103/physreve.103.042610
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发表时间：
2021-04-27
影响因子：
2.4
通讯作者：
Andelman, David
中科院分区：
文献类型：
--
作者：
Hosaka, Yuto;Komura, Shigeyuki;Andelman, David
讨论了具有奇粘性的二维手征可压缩流体的线性流体动力学响应。粘性系数表示2D流体中的破时间反转和奇偶对称性，并且表征系统与被动流体的偏差。考虑到流体动力学耦合到底层的散装流体，我们得到了奇粘度依赖的迁移率张量，这是负责的非互易流体动力学响应的点力。此外，我们考虑了一个有限大小的磁盘横向移动的二维流体和磁盘的经验，除了耗散阻力的非耗散升力。
We discuss the linear hydrodynamic response of a two-dimensional active chiral compressible fluid with odd viscosity. The viscosity coefficient represents broken time-reversal and parity symmetries in the 2D fluid and characterizes the deviation of the system from a passive fluid. Taking into account the hydrodynamic coupling to the underlying bulk fluid, we obtain the odd viscosity-dependent mobility tensor, which is responsible for the nonreciprocal hydrodynamic response to a point force. Furthermore, we consider a finite-size disk moving laterally in the 2D fluid and demonstrate that the disk experiences a nondissipative lift force in addition to the dissipative drag one.