4 papers
Universal Dynamical Scaling of Strong-to-Weak Spontaneous Symmetry Breaking in Open Quantum Systems
Chang Shu, Kai Zhang, Zhu-Xi Luo +2
Strong-to-weak spontaneous symmetry breaking (SWSSB) defines a mixed-state phase of matter--without a pure-state counterpart--in which nonlinear observables such as the Rényi-2 co…
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…
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…
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…