17 citations · 32 across the 6 of their papers we have counts for
6 papers
Dynamical Quantum Phase Transitions and Many-Body Backflow in Open Quantum Systems
Kai Zhang, Chang Shu, Kai Sun
Dynamical quantum phase transitions (DQPTs) are non-equilibrium transitions characterized by the orthogonality between an initial quantum state and its time-evolved counterpart fol…
Non-Bloch Dirac Points and Phase Diagram in the Stacked Non-Hermitian SSH Model
Megan Schoenzeit, Chang Shu, Kai Zhang +1
Topological semimetals exhibit protected band crossings in momentum space, accompanied by corresponding surface states. Non-Hermitian Hamiltonians introduce geometry-sensitive feat…
Ultra spectral sensitivity and non-local bi-impurity bound states from quasi-long-range non-hermitian skin modes
Chang Shu, Kai Zhang, Kai Sun
A fundamental tenet of quantum mechanics is that the energy spectrum of a quantum system shall remain stable against infinitesimally weak and spatially confined perturbations. In t…
Algebraic non-Hermitian skin effect and generalized Fermi surface formula in arbitrary dimensions
Kai Zhang, Chang Shu, Kai Sun
The non-Hermitian skin effect, characterized by a proliferation of exponentially localized edge modes in open-boundary systems, has led to the discovery of numerous novel physical…
Universal spectral moment theorem and its applications in non-Hermitian systems
Nan Cheng, Chang Shu, Kai Zhang +2
The high sensitivity of the spectrum and wavefunctions to boundary conditions, termed the non-Hermitian skin effect, represents a fundamental aspect of non-Hermitian systems. While…
Topologically Protected Exceptional Points and Reentrant Phase in an Exact Ternary Model
Chulwon Lee, Kai Zhang, Jinyan Miao +2
In open, driven systems where parity-time symmetry is preserved, phenomena that defy conventional wisdom emerge near exceptional points, promising advances in photonics. While most…