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TT 61: Correlated Electrons: (General) Theory 2 - DPG
TT 61: Correlated Electrons: (General) Theory 2 - DPG

... — 1 Institut für Theorie der Kondensierten Materie, Karlsruher Institut für Technologie, Deutschland — 2 Institut für Festkörperphysik, Karlsruher Institut für Technologie, Deutschland — 3 Institute for Theoretical Physics, Universiteit Utrecht, Niederlande ...
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Topological quantum field theory

A topological quantum field theory (or topological field theory or TQFT) is a quantum field theory which computes topological invariants.Although TQFTs were invented by physicists, they are also of mathematical interest, being related to, among other things, knot theory and the theory of four-manifolds in algebraic topology, and to the theory of moduli spaces in algebraic geometry. Donaldson, Jones, Witten, and Kontsevich have all won Fields Medals for work related to topological field theory.In condensed matter physics, topological quantum field theories are the low energy effective theories of topologically ordered states, such as fractional quantum Hall states, string-net condensed states, and other strongly correlated quantum liquid states.
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