Implementation of bond weighting method for the Grassmann tensor renormalization group

Author:

Shinichiro Akiyama

Keyword:

High Energy Physics - Lattice, High Energy Physics - Lattice (hep-lat), Strongly Correlated Electrons (cond-mat.str-el)

journal:

UTCCS-P-150

date:

2023-11-29 00:00:00

Abstract

We demonstrate the efficiency of the bond weighting method for the Grassmann tensor renormalization group (TRG). Benchmarking with the two-dimensional Gross-Neveu model with the Wilson fermion at finite density, we show that the bond weighting method improves the accuracy of the original Grassmann TRG. We also provide a sample code of the bond-weighted TRG that can be applied to the two-dimensional models including fermions on a square lattice.

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