Title:
Mild Intro to 'topological states' of quantum lattice systems
Abstract:
I will give some very elementary facts on the topic of the title.
Probably I will explain the 'Kitaev' model and/or the AKLT model, and
perhaps I say something on nonabelian statistics and entanglement
entropy.
The interest in 'topological states' is mainly because they seem to be
outside the usual classification of states or 'phases' based on Landau
theory, where phases are described by local order parameters.
I might try to connect or contrast these phenomena to another
characterization of non-locality that was introduced in mathematical
statistical mechanics, namely Gibbs and Non-Gibbs properties.