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Results tagged with condensed-matter
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user 31920
The study of physical properties of condensed phases of matter, including solids and liquids.
10
votes
Benefit of using Matsubara Green function
That's a good question.
There is no perturbation series expansion for the retarded Green function because to apply Wicks theorem you need time-ordered expressions. You could of course just write dow …
- 321
4
votes
Good reading on the Keldysh formalism
If it is still of interest, next to all the excellent suggestions above there is a book from 2013 which I found rather helpful as it makes some neat observations I could not find in other texts:
None …