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hep-th1998★ 122 cited
A Generalized Fluctuation-Dissipation Theorem for Nonlinear Response Functions
Enke Wang, Ulrich Heinz
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 t…
hep-th1998★ 22 cited
n-point functions at finite temperature
Defu Hou, Enke Wang, Ulrich Heinz
We study -point functions at finite temperature in the closed time path formalism. With the help of two basic column vectors and their dual partners we derive a compact decompos…