An Inflow Mechanism for Hydrodynamic Entropy

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.

7 pages, 1 figure; v2: minor improvements

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Cited by in corpus (12)

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• Effective Action for Relativistic Hydrodynamics: Fluctuations, Dissipation, and Entropy Inflow
• Holographic Schwinger-Keldysh effective field theories
• A panoply of Schwinger-Keldysh transport
• Nonlinear Langevin dynamics via holography
• Hydrodynamics, spin currents and torsion
• Spontaneous symmetry breaking and Nambu-Goldstone modes in open classical and quantum systems
• Extensivity, entropy current, area law and Unruh effect
• Third-order relativistic hydrodynamics: dispersion relations and transport coefficients of a dual plasma
• An entropy current in superspace
• First part of Clausius heat theorem in terms of Noether's theorem
• Entropy current in relativistic quantum statistical mechanics