Renormalization group approach to non-Hermitian topological quantum criticality
Renormalization group approach to non-Hermitian topological quantum criticality
复制标题
非厄米拓扑量子临界性的重正化群方法
DOI:
10.1103/physrevb.102.205116
复制
发表时间:
2020-05
期刊:
影响因子:
--
通讯作者:
Baigeng Wang
中科院分区:
文献类型:
--
作者:
Boran Zhou;Rui Wang;Baigeng Wang
Critical transition points between symmetry-broken phases are characterized as fixed points in the renormalization group (RG) theory. We show that, following the standard Wilsonian procedure that traces out the large momentum modes, this well known fact can break down in non-Hermitian systems. Based on non-Hermitian Su-Schrieffer-Hegger (SSH)-type models, we propose a real-space decimation scheme to study the criticality between the topological and trivial phase. We provide concrete examples and an analytic proof to show that the real-space scheme perfectly overcomes the insufficiency of the standard method, especially in the sense that it always preserves the system at criticality as fixed points under RG. The proposed method can also greatly simplify the search of critical points for complicated non-Hermitian models by ruling out the irrelevant operators. These results pave the way towards more advanced RG-based techniques for the interacting non-Hermitian quantum systems.
登录
查看更多内容
影响因子:
3.7
作者:
M. Papaj;H. Isobe;L. Fu
通讯作者:
M. Papaj;H. Isobe;L. Fu
影响因子:
2.9
作者:
Chuanhao Yin;Hui Jiang;Linhu Li;R. Lu;Shu Chen
通讯作者:
Chuanhao Yin;Hui Jiang;Linhu Li;R. Lu;Shu Chen
DOI:
10.1103/revmodphys.66.129
发表时间:
1993-07
期刊:
--
影响因子:
--
作者:
P. Kopietz
通讯作者:
P. Kopietz
影响因子:
1.7
作者:
Xiaosen Yang;Yang Cao;Yunjia Zhai
通讯作者:
Xiaosen Yang;Yang Cao;Yunjia Zhai
DOI:
10.1209/0295-5075/128/36001
发表时间:
2019-12
期刊:
Europhysics Letters
影响因子:
--
作者:
P. Molignini;R. Chitra;Wei Chen;Wei Chen
通讯作者:
P. Molignini;R. Chitra;Wei Chen;Wei Chen