Work

Many-Body Non-Hermitian Skin Effect with Exact Steady States in the Dissipative Quantum Link Model

Year: 2025

Type: article

Abstract: We introduce a dissipative lattice gauge model that exhibits the many-body version of the non-Hermitian skin effect. The dissipative couplings between dynamical gauge fields on the lattice links and the surrounding environment generate chiral motions of particles residing on lattice sites. Despite the complexity arising from many-body interactions, the local gauge symmetry enables the exact construction of a steady state that displays the many-body non-Hermitian skin effect. Furthermore, our approach can be generalized to realize a new type of many-body non-Hermitian skin effect, dubbed the hierarchical skin effect, where different subsystem degrees of freedom exhibit boundary accumulation of multiple moments at different orders. Our findings can be readily observed by engineering dissipation in state-of-the-art lattice gauge simulators.

Source: Physical Review Letters

DOI: 10.1103/wztw-l8wg

Authors: Yu-Min Hu, Zijian Wang, Biao Lian, Zhong Wang

Institutions: Max Planck Institute for the Physics of Complex Systems, Tsinghua University, Princeton University

Language: English

Topic: Quantum Mechanics and Non-Hermitian Physics

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,750