Generalized eta-pairing approach to interacting non-Hermitian systems in arbitrary dimensions
This research develops a generalized eta-pairing theory to study interacting non-Hermitian Hubbard models on any lattice. It unifies various symmetry properties under a single SO(4) framework, revealing novel features like non-conjugate eigenoperators and spatial modulation of pairing amplitudes, which explain phenomena such as the non-Hermitian skin effect.