Critical points in two-dimensional replica sigma models
classification
❄️ cond-mat.str-el
cond-mat.dis-nn
keywords
criticalmodelspointsreplicasigmatwo-dimensionalappearbecause
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I survey the kinds of critical behavior believed to be exhibited in two-dimensional disordered systems. I review the different replica sigma models used to describe the low-energy physics, and discuss how critical points appear because of WZW and theta terms.
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