A stable incremental SVD method and a hierarchical low-rank construction represent long-range pairwise interactions as sums of O(log N log(N/epsilon)) constant-bond-dimension MPOs/PEPOs.
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Low-rank representation of tensor network operators with long-range pairwise interactions
A stable incremental SVD method and a hierarchical low-rank construction represent long-range pairwise interactions as sums of O(log N log(N/epsilon)) constant-bond-dimension MPOs/PEPOs.