An entropy current in superspace

Abstract

We construct an entropy current using a supersymmetric formulation of the low-energy effective action for the Schwinger-Keldysh generating functional. We define an entropy current quantum mechanically by coupling it to an external source. It is given by the bottom component of an entropy current superfield which is conserved in superspace, but when restricted to real space satisfies a non-conservation law. Our analysis is valid in the probe limit which allows us to fully treat quantum fluctuations.

20 pages

References in corpus (6)

• The eightfold way to dissipation
• Entropy Current from Partition Function: One Example
• A panoply of Schwinger-Keldysh transport
• The second law of thermodynamics from symmetry and unitarity
• An Inflow Mechanism for Hydrodynamic Entropy
• Schwinger-Keldysh superspace in quantum mechanics

Cited by in corpus (10)

• Hydrodynamics of spin currents
• Holographic Schwinger-Keldysh effective field theories
• Nonlinear Langevin dynamics via holography
• Hydrodynamics, spin currents and torsion
• The coset construction for non-equilibrium systems
• Spontaneous symmetry breaking and Nambu-Goldstone modes in open classical and quantum systems
• Extensivity, entropy current, area law and Unruh effect
• Holographic Schwinger-Keldysh field theory of SU(2) diffusion
• First part of Clausius heat theorem in terms of Noether's theorem
• Entropy current in relativistic quantum statistical mechanics