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Aug
2
comment Calculating conductivity from Green's functions
I have seen the Kubo formula. But it would be nice if one could derive the Kubo formula from the linear regime of the Dyson equations. The current can, as far as i know, be expressed in terms of the kinetic (Keldysh) Green's function. I don't understand how though.
Aug
1
asked Calculating conductivity from Green's functions