Proves equivalence of redundant Goldstone and adjoint-matter formulations of SK EFTs for non-Abelian symmetries and extends both to all orders in ħω/T while classifying invariant kernels under DKMS and unitarity.
A Generalized Fluctuation-Dissipation Theorem for Nonlinear Response Functions
2 Pith papers cite this work. Polarity classification is still indexing.
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abstract
A nonlinear generalization of the Fluctuation-Dissipation Theorem (FDT) for the n-point Green functions and the amputated 1PI vertex functions at finite temperature is derived in the framework of the Closed Time Path formalism. We verify that this generalized FDT coincides with known results for n=2 and 3. New explicit relations among the 4-point nonlinear response and correlation (fluctuation) functions are presented.
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UNVERDICTED 2representative citing papers
A review of response theory formalism for isolated quantum fields emphasizing causality, functional techniques, and fluctuation-dissipation relations.
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Schwinger-Keldysh effective theory of charge transport: redundancies and systematic $\omega/T$ expansion
Proves equivalence of redundant Goldstone and adjoint-matter formulations of SK EFTs for non-Abelian symmetries and extends both to all orders in ħω/T while classifying invariant kernels under DKMS and unitarity.
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Response theory for quantum fields in isolation
A review of response theory formalism for isolated quantum fields emphasizing causality, functional techniques, and fluctuation-dissipation relations.