aaaa202 Messages 1,144 Reaction score 2 Thread starter May 9, 2015 #1 In my book the path integral representation of the green's function is given as that on the attached picture. But how do you go from the usual trace formula for the Green's function 2.6 to this equation? Attachments greens.png 11.4 KB · Views: 535
In my book the path integral representation of the green's function is given as that on the attached picture. But how do you go from the usual trace formula for the Green's function 2.6 to this equation?
vanhees71 Science Advisor Education Advisor Insights Author Messages 24,488 Reaction score 15,060 May 9, 2015 #2 That's a bit too lengthy an answer for a forum posting. Perhaps my lecture notes on many-body QFT help a bit: http://fias.uni-frankfurt.de/~hees/publ/off-eq-qft.pdf
That's a bit too lengthy an answer for a forum posting. Perhaps my lecture notes on many-body QFT help a bit: http://fias.uni-frankfurt.de/~hees/publ/off-eq-qft.pdf