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What is the relation between Keldysh and NEGF ?
Closed | Responses: 0
Dear prof., I'm learning NEGF and Keldysh formalism. The latter seems also refereed to as NEGF in the literature. What is the relation between them ? Are they the same thing ?
how do we impose G<(x,x) to be pure immaginary?
Open | Responses: 1
According to Kadanoff-Baym book, formula (2-2), one has: = -i G
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