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Odd waves in fluids turn topological

April 11, 2019

Fluids which break time reversal symmetry, such as collections of charged particles in a magnetic field or self-rotating particles, can possess a dissipationless transport coefficient known as "odd viscosity".  Kinjal Dasbiswas with a team at the University of Chicago show how this odd viscosity affects and helps drive topologically protected sound waves in such fluids. Their work appears in Physical Review Letters.