Abstract
We construct a Schwinger-Keldysh effective field theory for relativistic hydrodynamics for charged matter in a thermal background using a superspace formalism. Superspace allows us to efficiently impose the symmetries of the problem and to obtain a simple expression for the effective action. We show that the theory we obtain is compatible with the Kubo-Martin-Schwinger condition, which in turn implies that Green’s functions obey the fluctuation-dissipation theorem. Our approach complements and extends existing formulations found in the literature.
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Jensen, K., Pinzani-Fokeeva, N. & Yarom, A. Dissipative hydrodynamics in superspace. J. High Energ. Phys. 2018, 127 (2018). https://doi.org/10.1007/JHEP09(2018)127
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DOI: https://doi.org/10.1007/JHEP09(2018)127