2 papers
cond-mat.mes-hall2026
Dynamical Poles in Non-Hermitian Impurity Scattering
Ao Yang, Kai Zhang, Chen Fang
In Hermitian impurity scattering, each isolated late-time exponential is the fingerprint of a bound state. We show that this correspondence breaks down in non-Hermitian bands. For…
cond-mat.mes-hall2024
Symmetry invariants and classes of quasiparticles in magnetically ordered systems having weak spin-orbit coupling
Jian Yang, Zheng-Xin Liu, Chen Fang
Symmetry invariants of a group specify the classes of quasiparticles, namely the classes of projective irreducible co-representations in systems having that symmetry. More symmetry…