Abstract Quantum link models (QLM) serve as experimentally reachable platforms for studying lattice gauge theories with finite-dimensional Hilbert spaces. In this work, we study the information scrambling in the partial confinement phase of a spin-1 quantum link model, by calculating the dynamics of out-of-time-ordered correlators (OTOC) and entanglement entropy, We observe that, in the partially confined phase, information scrambling exhibits significant asymmetry, manifested as unidirectional propagation of both OTOC and entanglement entropy. This phenomenon is starkly contrasted with the isotropic spreading in the deconfined phase and localization in the confined phase. Furthermore, the co-occurrence of the unidirectional propagation of both OTOC and entanglement entropy and the θ -induced asymmetric excitation propagation reveals a direct connection between information scrambling and charge confinement.
Luo et al. (Fri,) studied this question.