221 citations · 669 across the 20 of their papers we have counts for
22 papers
Scale-free localization in pseudo-Hermitian quantum walk
Haiting Zhang, Lei Xiao, Cui-Xian Guo +2
Scale-free localization is a distinctive phenomenon in non-Hermitian systems, where specific eigenstates, known as scale-free localized states (LSs), possess localization lengths t…
Decoding Equilibrium and Dynamical Criticality in the 2D Topological Order
Xiao-Ming Zhao, Cui-Xian Guo, Gaoyong Sun +1
Analytically connecting equilibrium criticality and dynamical quantum phase transitions (DQPTs) under complex driving fields remains a significant challenge, primarily due to the c…
Tailoring Corner States and Exceptional Points in Altermagnets
Xiao-Ming Zhao, Cui-Xian Guo, Xin-Ran Ma +2
Altermagnets (AMs) exhibit vanishing net magnetization but strong momentum-dependent spin splitting enforced by crystal symmetry. Here, we explore the non-Hermitian effects in diss…
Tuning Topological States by Dissipation
Xue-Ping Ren, Yue Hu, Long-Ye Lu +4
The bulk-boundary correspondence plays a crucial role in topological quantum systems, however,this principle is broken in non-Hermitian systems. The breakdown of the bulk-boundary…
A Unified Framework for the Non-Hermitian Localization: Boundary-Insensitive Modes and Electric-Magnetic Analogy
Zheng Wei, Ji-Yao Fan, Kui Cao +4
The non-Hermitian skin effect is fundamentally characterized by its sensitivity to boundary conditions, reflected in changes to the energy spectrum and boundary-localized eigenstat…
Scale-tailored localization and its observation in non-Hermitian electrical circuits
Cui-Xian Guo, Luhong Su, Yongliang Wang +7
Anderson localization and non-Hermitian skin effect are two paradigmatic wave localization phenomena, resulting from wave interference and the intrinsic non-Hermitian point gap, re…
Accumulation of scale-free localized states induced by local non-Hermiticity
Cui-Xian Guo, Xueliang Wang, Haiping Hu +1
The bulk states of Hermitian systems are believed insensitive to local Hermitian impurities or perturbations except for a few impurity-induced bound states. Thus, it is important t…
Observation of size-dependent boundary effects in non-Hermitian electric circuits
Luhong Su, Cui-Xian Guo, Yongliang Wang +5
The non-Hermitian systems with the non-Hermitian skin effect (NHSE) are very sensitive to the imposed boundary conditions and lattice size, which leads to size-dependent non-Hermit…
Exceptional Non-Abelian Topology in Multiband Non-Hermitian Systems
Cui-Xian Guo, Shu Chen, Kun Ding +1
Defective spectral degeneracy, known as exceptional point (EP), lies at the heart of various intriguing phenomena in optics, acoustics, and other nonconservative systems. Despite e…
Exact solutions of non-Hermitian chains with asymmetric long-range hopping under specific boundary conditions
Cui-Xian Guo, Shu Chen
We study one-dimensional general non-Hermitian models with asymmetric long-range hopping and explore to analytically solve the systems under some specific boundary conditions. Alth…
Exact solution of non-Hermitian systems with generalized boundary conditions: size-dependent boundary effect and fragility of skin effect
Cui-Xian Guo, Chun-Hui Liu, Xiao-Ming Zhao +2
Systems with non-Hermitian skin effects are very sensitive to the imposed boundary conditions and lattice size, and thus an important question is whether non-Hermitian skin effects…
Defective Majorana zero modes in non-Hermitian Kitaev chain
Xiao-Ming Zhao, Cui-Xian Guo, Su-Peng Kou +2
Topological stability is an important property for topological materials. However, the non-Hermitian effects may change this situation. Here, we investigate the robustness of edge…
Irrational Non-Abelian Statistics for Non-Hermitian Generalization of Majorana Zero Modes
Xiao-Ming Zhao, Cui-Xian Guo, Meng-Lei Yang +3
In condensed matter physics, non-Abelian statistics for Majorana zero modes (or Majorana Fermions) is very important, really exotic, and completely robust. The race for searching M…
Anomalous Spontaneous Symmetry Breaking in non-Hermitian Systems with Biorthogonal Z2-symmetry
Meng-Lei Yang, Heng Wang, Cui-Xian Guo +3
Landau's spontaneous symmetry breaking theory is a fundamental theory that describes the collective behaviors in many-body systems. It was well known that for usual spontaneous sym…
State-dependent Topological Invariants and Anomalous Bulk-Boundary Correspondence in non-Hermitian Topological Systems
Xiao-Ran Wang, Cui-Xian Guo, Su-Peng Kou
The breakdown of the bulk-boundary correspondence in non-Hermitian (NH) topological systems is an open, controversial issue. In this paper, to resolve this issue, we ask the follow…
Effective non-Hermitian physics for degenerate ground states of a nonHermitian Ising model with symmetry
Can Wang, Meng-Lei Yang, Cui-Xian Guo +2
In this paper, based on a one-dimensional non-Hermitian spin model with -invariant term, we study the non-Hermitian physics for the two (nearly) degenerate ground sta…
Defective Edge states and Anomalous Bulk-boundary Correspondence for Topological Insulators under Non-Hermitian Similarity Transformation
Can Wang, Xiao-Ran Wang, Cui-Xian Guo +1
It was known that for non-Hermitian topological systems due to the non-Hermitian skin effect, the bulk-edge correspondence is broken down. In this paper, by using one-dimensional S…
Non-Hermitian Avalanche Effect: Non-Perturbative Effect Induced by Local Non-Hermitian Perturbation on a Z2 Topological Order
Cui-Xian Guo, Xiao-Ran Wang, Su-Peng Kou
In this paper, based on a non-Hermitian toric-code model, we surprisingly find that the degeneracy of ground states can be changed by a local non-Hermitian perturbation (even in th…
Defective Edge States and Anomalous Bulk-Boundary Correspondence in non-Hermitian Topological Systems
Xiao-Ran Wang, Cui-Xian Guo, Su-Peng Kou
Non-Hermitian topological systems show quite different properties as their Hermitian counterparts. An important, puzzled issue on non-Hermitian topological systems is the existence…
Non-Hermitian Dynamic Strings and Anomalous Topological Degeneracy on non-Hermitian Toric-code Model with Parity-time Symmetry
Cui-Xian Guo, Xiao-Ran Wang, Su-Peng Kou
In this paper, with the help of Hermitian/non-Hermitian dynamic strings, the theory of non-Hermitian topological order is developed based on a non-Hermitian Wen-plaquette model. Th…
Emergent Quantum Dynamics of Vortex Line under Linear Local Induction Approximation
Guihao Jia, Yu Xu, Xiao Kong +3
Using the linear local induction approximation, we investigated the self-induced motion of a vortex line that corresponds to the motion of a particle in quantum mechanics. Concerni…
Fermi Arcs in Tilted Weyl Semimetals: Classification, Evolution and Transport Properties
Xiao-Ming Zhao, Xiao Kong, Cui-Xian Guo +2
The Weyl semimetal is a new quantum state of topological semimetal, of which topological surface states -- the Fermi arcs exist. In this paper, the Fermi arcs in Weyl semimetals ar…