Locality in Quantum Systems

Details Locality in Quantum Systems Locality in Quantum Systems

2010-08-30

arxiv.org/abs/1008.5137v1

Physics

Mathematical Physics

lecture notes from Les Houches summer school

Scientific paper

These lecture notes focus on the application of ideas of locality, in particular Lieb-Robinson bounds, to quantum many-body systems. We consider applications including correlation decay, topological order, a higher dimensional Lieb-Schultz-Mattis theorem, and a nonrelativistic Goldstone theorem. The emphasis is on trying to show the ideas behind the calculations. As a result, the proofs are only sketched with an emphasis on the intuitive ideas behind them, and in some cases we use techniques that give very slightly weaker bounds for simplicity. This is a preliminary version of the lecture notes, with the goal of getting the notes out close to the end of the school. Comments welcome.

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