Year: 2025
Type: article
Abstract: Quantum anomalies strongly constrain possible low-energy physics of condensed matter systems. In particular, it prohibits the existence of a trivially gapped phase. Here, the authors extend the notion of quantum anomalies to disordered systems, where symmetries can be preserved on average by disorder. Through physical arguments and solvable lattice models, the authors discover a series of phases intrinsic to disordered systems that are compatible with quantum anomalies involving average symmetries. These results serve as compelling evidence of the nontriviality of quantum anomalies, even with loosened requirements on symmetry and quantum coherence.
Authors: Yichen Xu, Chao-Ming Jian
Institution: Cornell University
Language: English
Topic: Quantum many-body systems
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4408332245