Many-body Localization Transition of Ising Spin-1 Chains

• DOI: 10.48550/arxiv.2405.02028
• Publication Date: 2024-05-03
• Authors: Taotao Hu; Yining Zhang; Hang Ren; Yiwen Gao; Xiaodan Li; Jiameng Hong; Yuting Li
• Keywords: Ising spin

In this paper, we theoretically investigate the many-body localization properties of one-dimensional Ising spin-1 chains by using methods exact matrix diagonalization. We compare it with MBL spin-1/2 chains. The results indicate that can also undergo phase transition. There are various forms disorder, and effects different quasi-disorder random disorder on in paper. First, calculate exctied-state fidelity to study transtion. By changing form quasi-disorder, transition system them those disordered system. show both cause order effect spin interactions, next-nearest-neighbour(N-N) two-body interactions next-next-nearest-neighbour (N-N-N)interactions. critical point increases addition interaction. Then dynamical model behavior diagonal entropy (DE), local magnetization time evolution further prove occurrence (N-N) coupling term distinguish ergodic (thermal phase) localized phase. Lastly, delve into impact periodic driving And obtained from It shows occur