Modular matrices as topological order parameter by a gauge-symmetry-preserved tensor renormalization approach
Modular matrices as topological order parameter by a gauge-symmetry-preserved tensor renormalization approach
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通过保规范对称性张量重正化方法将模矩阵作为拓扑序参数
DOI:
10.1103/physrevb.90.205114
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发表时间:
2014-01
影响因子:
3.7
通讯作者:
Wen, Xiao-Gang
中科院分区:
文献类型:
--
作者:
He, Huan;Moradi, Heidar;Wen, Xiao-Gang
Topological order has been proposed to go beyond Landau symmetry breaking theory for more than twenty years. But it is still a challenging problem to generally detect it in a generic many-body state. In this paper, we will introduce a systematic numerical method based on tensor network to calculate modular matrices in 2D systems, which can fully identify topological order with gapped edge. Moreover, it is shown numerically that modular matrices, including S and T matrices, are robust characterization to describe phase transitions between topologically ordered states and trivial states, which can work as topological order parameters. This method only requires local information of one ground state in the form of a tensor network, and directly provides the universal data (S and T matrices), without any non-universal contributions. Furthermore it is generalizable to higher dimensions. Unlike calculating topological entanglement entropy by extrapolating, which numerical complexity is exponentially high, this method extracts a much more complete set of topological data (modular matrices) with much lower numerical cost.
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DOI:
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发表时间:
2011
期刊:
--
影响因子:
--
作者:
M. Rosseinsky
通讯作者:
M. Rosseinsky
DOI:
10.1007/3-540-49208-9_31
发表时间:
1998-02
期刊:
--
影响因子:
--
作者:
Vahid Karimipour;J. Preskill
通讯作者:
Vahid Karimipour;J. Preskill
DOI:
10.1007/978-3-642-38874-3_5
发表时间:
2012-05
期刊:
--
影响因子:
--
作者:
J. Pachos
通讯作者:
J. Pachos
DOI:
10.1090/s0273-0979-02-00964-3
发表时间:
2003
期刊:
Proceedings of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences
影响因子:
--
作者:
L. Jacak;P. Sitko;K. Wieczorek;A. W'ojs
通讯作者:
A. W'ojs