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- W4362697260 abstract "We adapt and optimize the projected-pair-entangled-state (PEPS) algorithm on finite lattices (fPEPS) for two-dimensional Hubbard models and apply the algorithm to the Hubbard model with nearest-neighbor hopping on a square lattice. In particular, we formulate the PEPS algorithm using projected entangled pair operators, incorporate SU(2) symmetry in all tensor indices, and optimize the PEPS using both iterative-diagonalization-based local bond optimization and gradient-based optimization of the PEPS. We discuss the performance and convergence of the algorithm for the Hubbard model on lattice sizes of up to 8x8 for PEPS states with U(1) symmetric bond dimensions of up to D = 8 and SU(2) symmetric bond dimensions of up to D = 6. Finally, we comment on the relative and overall efficiency of schemes for optimizing fPEPS." @default.
- W4362697260 created "2023-04-09" @default.
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- W4362697260 date "2023-04-07" @default.
- W4362697260 modified "2023-10-01" @default.
- W4362697260 title "Finite projected entangled pair states for the Hubbard model" @default.
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- W4362697260 doi "https://doi.org/10.1103/physrevb.107.165112" @default.
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