Generalized Lanczos method for systematic optimization of tensor network states<xref rid="cpb_27_7_070501fn1" ref-type="fn">*</xref><fn id="cpb_27_7_070501fn1"> <label>*</label><p>Project supported by the National Natural Science Foundation of China (Grant Nos. 11190024 and 11474331).</p> </fn>

Generalized Lanczos method for systematic optimization of tensor network states* *

Project supported by the National Natural Science Foundation of China (Grant Nos. 11190024 and 11474331).

Huang Rui-Zhen^{1, 2}, Liao Hai-Jun¹, Liu Zhi-Yuan^{2, 3}, Xie Hai-Dong^{1, 2}, Xie Zhi-Yuan⁴, Zhao Hui-Hai^{5, 6, 7}, Chen Jing^{1, 2}, Xiang Tao^{1, 2, 8, †}

(color online) Power-law fitting for the ground-state energy of the two-dimensional antiferrormagnetic Heisenberg model obtained by the PEPS-based Lanczos method with D = 3 and n = 50. The fitting formula is given in Eq. (16) and the best fitting parameter is α = 0.91717. The extrapolated ground-state energy E₀ is −0.66812(74).