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arXiv · 1803.08490

An Inflow Mechanism for Hydrodynamic Entropy

Felix M. Haehl·R. Loganayagam·Mukund Rangamani
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Abstract

We argue that entropy production in hydrodynamics can be understood via a superspace inflow mechanism. Our arguments are based on a recently developed formalism for constructing effective actions for Schwinger-Keldysh observables in quantum field theories. The formalism explicitly incorporates microscopic unitarity and the Kubo-Martin-Schwinger thermal periodicity conditions, by recasting them in terms of topological BRST symmetries of the effective action.

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Felix M. Haehl, R. Loganayagam, Mukund Rangamani. 2018-04-04. An Inflow Mechanism for Hydrodynamic Entropy. https://doi.org/10.1103/physrevlett.121.051602

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