Renormalization group contraction of tensor networks in three dimensions

Details Renormalization group contraction of tensor networks in three dimensions Renormalization group contraction of tensor networks in three dimensions

2011-12-06

arxiv.org/abs/1112.1412v1

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 8 figures

Scientific paper

We present a new strategy for contracting tensor networks in arbitrary geometries. This method is designed to follow as strictly as possible the renormalization group philosophy, by first contracting tensors in an exact way and, then, performing a controlled truncation of the resulting tensor. We benchmark this approximation procedure in two dimensions against an exact contraction. We then apply the same idea to a three dimensional system. The underlying rational for emphasizing the exact coarse graining renormalization group step prior to truncation is related to monogamy of entanglement.

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