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Triad second renormalization group
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DOI：10.1007/JHEP04(2022)121.png)
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摘要
En 中文
We propose a second renormalization group (SRG) in the triad representation of tensor networks. The SRG method improves two parts of the triad tensor renormalization group, which are the decomposition of intermediate tensors and the preparation of isometrics, taking the influence of environment tensors into account. Every fundamental tensor including environment tensor is given as a rank-3 tensor, and the computational cost of the proposed algorithm scales with O(chi(5)) employing the randomized SVD where chi is the bond dimension of tensors. We test this method in the classical Ising model on the two dimensional square lattice, and find that numerical results are obtained in good accuracy for a fixed computational time.
Keyword:
Lattice Quantum Field Theory
Renormalization Group
期刊
IF:
5.5
论文数:
4.0W
被引数:
13.7W
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引用论文
Global optimization of tensor renormalization group using the corner transfer matrix.png)
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