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contents1.html
contents1.html
http://www.physik.fu-berlin.de/~kleinert/kleiner_reb1/contents1.html
Classical XY model
Flux pumping
Hagen Kleinert
Ising model
Kosterlitz–Thouless transition
Order operator
Phase transition
Scaling limit
Superconductivity
Superfluid helium-4
Link from a Wikipage to an external page
contents1.html
http://www.physik.fu-berlin.de/~kleinert/kleiner_reb1/contents1.html