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def definition def or abbrev

qptExamples

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 212def qptExamples : List String := [

proof body

Definition body.

 213  "Mott insulator-metal",
 214  "Quantum Hall plateau transitions",
 215  "Heavy fermion systems",
 216  "Superconductor-insulator"
 217]
 218
 219/-! ## Topological Phase Transitions -/
 220
 221/-- Topological transitions change the topology, not symmetry:
 222    - Kosterlitz-Thouless (2D XY model)
 223    - Topological insulator transitions
 224
 225    In RS: Topology of J-cost landscape changes. -/

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