Many-body localization regime for cavity-induced long-range interacting models

Many-body localization (MBL) features are studied here for a large spin chain model with long-range interactions. The model corresponds to cold atoms placed inside a cavity and driven by an external laser field with long-range interactions coming from rescattering of cavity photons. Earlier studies were limited to small sizes amenable to exact diagonalization. It is shown that nonergodic features and MBL may exist in this model for random disorder as well as in the presence of tilted potential on experimental timescales also for experimentally relevant system sizes using tensor network algorithms.

Automated summary

In this study, many-body localization (MBL) features are explored in a large spin chain model with long-range interactions. The model represents cold atoms inside a cavity driven by an external laser field, where long-range interactions originate from rescattering of cavity photons. Previous studies were limited to small system sizes that could be exactly diagonalized. By utilizing tensor network algorithms, nonergodic features and MBL are demonstrated to exist in this model for random disorder and in the presence of a tilted potential, even for system sizes relevant to experiments.