Impurities Induce Localisation Without a Characteristic Scale in Lattices

Scientists Hui Liu and Zhihao Xu of Shanxi University have detailed how imperfections within a novel lattice structure acutely influence energy dissipation. Anomalous scale-free localization and associated loss bursts occur within a non-Hermitian dissipative lattice, as demonstrated by Liu and colleagues. Strategically placed impurities function as tunable boundaries, controlling energy spread and loss from the system. The research links this unique localization type with enhanced dissipation, potentially offering new ways to manipulate energy flow in non-Hermitian lattices without traditional gap closing methods. The long-time integrated dissipation probability increased fivefold near deliberately placed impurities, a result previously unattainable without inducing imaginary-gap closing.…