Resolving Hall and dissipative viscosity ambiguities via boundary effects

نویسندگان

چکیده

We examine the physical implications of viscous redundancy two-dimensional anisotropic fluids, where different components viscosity tensor lead to identical effects in bulk a system [Rao and Bradlyn, Phys. Rev. X $\textbf{10}$, 021005 (2020)]. first re-introduce redundancy, show how it reflects lack knowledge microscopic information system, give examples. Next, we that fluid flow systems with boundary can distinguish between otherwise redundant coefficients. In particular, dispersion damping gravity-dominated surface waves be used resolve redundancies both dissipative Hall viscosities, discuss these results apply recent experiments chiral active fluids nonvanishing viscosity. Our highlight importance divergenceless, magnetization-like contributions stress (which dub ``contact terms''). Finally, our hydrodynamics quantum extra contribution action renders Wen-Zee gauge invariant reinterpreted terms redundancy.

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ژورنال

عنوان ژورنال: Physical review

سال: 2023

ISSN: ['0556-2813', '1538-4497', '1089-490X']

DOI: https://doi.org/10.1103/physrevb.107.075148