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cond-mat.str-el2025
Ace-TN: GPU-Accelerated Corner-Transfer-Matrix Renormalization of Infinite Projected Entangled-Pair States
Addison D. S. Richards, Erik S. Sørensen
The infinite projected entangled-pair state (iPEPS) ansatz is a powerful tensor-network approximation of an infinite two-dimensional quantum many-body state. Tensor-based calculati…
cond-mat.str-el2023★ 3 cited
Exact Ground States and Phase Diagram of the Quantum Compass Model under an in-plane Field
A. D. S. Richards, Erik S. Sørensen
We consider the square lattice =1/2 quantum compass model (QCM) parameterized by , under a field, , in the - plane. At the special field value, $(h_x…