2 papers
quant-ph2026
Non-Hermitian topology driven by an identity term: An exactly solvable paradigm
Lingfang Li, Yating Wei, Yang Ruan +6
An identity term in the Hamiltonian is conventionally regarded as spectrally inert-it shifts energies but does not alter eigenstate topology. We show that under non-Hermitian skin…
physics.optics2024
Exact Solutions Disentangle Higher-Order Topology in 2D Non-Hermitian Lattices
Lingfang Li, Yating Wei, Gangzhou Wu +4
We report the exact closed-form solutions for higher-order topological states as well as explicit energy-spectrum relationships in two-dimensional (2D) non-Hermitian multi-orbital…