General Criterion for Non-Hermitian Skin Effects and Application: Fock Space Skin Effects in Many-Body Systems

K Shimomura, M Sato - Physical Review Letters, 2024 - APS
Non-Hermiticity enables macroscopic accumulation of bulk states, named non-Hermitian
skin effects. The non-Hermitian skin effects are well established for single-particle systems …

Non-Hermitian entanglement dip from scaling-induced exceptional criticality

S Liu, H Jiang, WT Xue, Q Li, J Gong, X Liu… - arXiv preprint arXiv …, 2024 - arxiv.org
It is well established that the entanglement entropy of a critical system generally scales
logarithmically with system size. Yet, in this work, we report a new class of non-Hermitian …