Do tensor renormalization group methods work for frustrated spin systems?

Helmut G. Katzgraber; Zheng Zhu

Do tensor renormalization group methods work for frustrated spin systems?

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arxiv 1903.07721 v1 pith:VGB3TBBH submitted 2019-03-18 cond-mat.dis-nn

Zheng Zhu , Helmut G. Katzgraber This is my paper · ORCID

classification cond-mat.dis-nn

keywords frustratedgroupmethodsrenormalizationspinsystemstensorcut-off

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No. To illustrate that tensor renormalization group methods are poorly suited for frustrated magnetic systems, we study the thermodynamic properties of the two-dimensional Edwards-Anderson Ising spin-glass model on a square lattice. We show that the limited precision of standard 64-bit data types and not a small cut-off parameter is the main reason for unphysical negative partition function values in spin glasses.

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