paper

Non-dissipative second-order transport, spin, and pseudo-gauge transformations in hydrodynamics

arXiv:2011.12318 · doi:10.1103/PhysRevLett.127.082302

Abstract

We derive a set of nontrivial relations between second-order transport coefficients which follow from the second law of thermodynamics upon considering a regime close to uniform rotation of the fluid. We demonstrate that extension of hydrodynamics by spin variable is equivalent to modifying conventional hydrodynamics by a set of second-order terms satisfying the relations we derived. We point out that a novel contribution to the heat current orthogonal to vorticity and temperature gradient reminiscent of the thermal Hall effect is constrained by the second law.

arXiv comment7 pages, accepted for publication in PRL

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