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- W1147983 abstract "We analyze classical dimer models on the square and triangular lattice using a tensor network representation of the dimers. The correlation functions are numerically calculated using the recently developed Tensor renormalization group (TRG) technique. The partition function for the dimer problem can be calculated exactly by the Pfaffian method which is used here as a platform for comparing the numerical results. TRG turns out to be a powerful tool for describing gapped systems with exponentially decaying correlations very efficiently due to its fast convergence. This is the case for the dimer model on the triangular lattice. However, the convergence becomes very slow and unstable in case of the square lattice where the model has algebraically decaying correlations. We highlight these aspects with numerical simulations and critically appraise the robustness of TRG approach by contrasting the results for small and large system sizes against the exact calculations. Furthermore, we benchmark our TRG results with classical Monte Carlo (MC) method." @default.
- W1147983 created "2016-06-24" @default.
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- W1147983 date "2015-05-14" @default.
- W1147983 modified "2023-10-16" @default.
- W1147983 title "Tensor renormalization group approach to classical dimer models" @default.
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- W1147983 doi "https://doi.org/10.1103/physrevb.91.205418" @default.
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