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We analyze the high temperature spin dynamics of compass models using a moment expansion. We point out that the evaluation of moments maps to the enumeration of paths in a… Click to show full abstract
We analyze the high temperature spin dynamics of compass models using a moment expansion. We point out that the evaluation of moments maps to the enumeration of paths in a branching process on the lattice. This mapping to a statistical mechanics combinatorics problem provides an elegant visualization of the analysis. We present results for the time dependent spin correlation function (which is of relevance to NMR experiments) for two compass models: the Kitaev honeycomb model and two-dimensional compass model.
Keywords:
dynamics quantum;
temperature dynamics;
high temperature;
compass models;
compass
Journal Title: Physical Review B
Year Published: 2018
Link to full text (if available)
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Journal Title: Physical Review B
Year Published: 2018
Link to full text (if available)
Share on Social Media: Sign Up to like & get
recommendations!