Regensburg 2013 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 14: Correlated Electrons: Low-Dimensional Systems - Models 2

TT 14.3: Vortrag

Montag, 11. März 2013, 15:30–15:45, H9

Topological order in classical string-net models — •Maria Hermanns, Mascha Baedorf, and Simon Trebst — Institute for Theoretical Physics, Cologne, Germany

Topological order has recently attracted a great deal of interest, because it allows for exotic emergent excitations that are robust against local perturbations. It is most commonly thought of as a quantum effect, which is strongly related to an effective low-energy description of the quantum system as a topological field theory. However, topological order can also occur in classical models that have local constraints. Most prominent among these are loop and string-net models. Here, we consider such classical models that are topologically ordered and analyze the relation between the classical topological order and its counter part in the quantum system.