Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2000-06-23
Physics
Condensed Matter
Strongly Correlated Electrons
19 pages; Lecture at the NATO Advanced Study Institute/EC Summer School on New Theoretical Approaches to Strongly Correlated S
Scientific paper
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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