Decay of Correlations in 2D Quantum Systems with Continuous Symmetry
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We study a large class of models of two-dimensional quantum lattice systems with continuous symmetries, and we prove a general McBryan–Spencer–Koma–Tasaki theorem concerning algebraic decay of correlations. We present applications of our main result to the Heisenberg, Hubbard, and t-J models, and to certain models of random loops.
- 10.Lieb, E. H.: The Hubbard model: some rigorous results and open problems. Adv Dyn Syst Quantum Phys, World Scientific, 173–193 (1995). arXiv:cond-mat/9311033
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