Implementation of bond weighting method for the Grassmann tensor renormalization group
arXiv:2311.17691
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.
7 pages, 4 figures, Proceedings of the 40th International Symposium on Lattice Field Theory (Lattice 2023), 31 July - 4 August 2023, Fermilab, Batavia, Illinois, USA