954 citations · 10.3k across the 169 of their papers we have counts for
173 papers
Spectral structure and doublon dissociation in the two-particle non-Hermitian Hubbard model
Stefano Longhi
Strongly-correlated systems in non-Hermitian models are an emergent area of research. Here we consider a non-Hermitian Hubbard model, where the single-particle hopping amplitudes o…
Phase transitions and bunching of correlated particles in a non-Hermitian quasicrystal
Stefano Longhi
Non-interacting particles in non-Hermitian quasi crystals display localization-delocalization and spectral phase transitions in complex energy plane, that can be characterized by p…
Anderson localization without eigenstates in photonic quantum walks
Stefano Longhi
Anderson localization is ubiquitous in wavy systems with strong static and uncorrelated disorder. The delicate destructive interference underlying Anderson localization is usually…
Anderson localization in dissipative lattices
Stefano Longhi
Anderson localization predicts that wave spreading in disordered lattices can come to a complete halt, providing a universal mechanism for {dynamical localization}. In the one-dime…
Phase transitions in non-Hermitian superlattices
Stefano Longhi
We investigate the energy spectral phase transitions arising in one-dimensional superlattices under an imaginary gauge field and possessing M sites in each unit cell in the large M…
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,…