129 citations · 156 across the 3 of their papers we have counts for
3 papers
quant-ph2023★ 9 cited
Analysis of Dirac exceptional points and their isospectral Hermitian counterparts
Jose H. D. Rivero, Liang Feng, Li Ge
Recently, a Dirac exceptional point (EP) was reported in a non-Hermitian system. Unlike a Dirac point in Hermitian systems, this Dirac EP has coalesced eigenstates in addition to t…
quant-ph2023★ 18 cited
Complex Berry phase and imperfect non-Hermitian phase transitions
Stefano Longhi, Liang Feng
In many classical and quantum systems described by an effective non-Hermitian Hamiltonian, spectral phase transitions, from an entirely real energy spectrum to a complex spectrum,…
cond-mat.mes-hall2017★ 129 cited
Topological tight-binding models from non-trivial square roots
J. Arkinstall, M. H. Teimourpour, L. Feng +2
We describe a versatile mechanism that provides tight-binding models with an enriched, topologically nontrivial bandstructure. The mechanism is algebraic in nature, and leads to ti…