中国物理B ›› 2025, Vol. 34 ›› Issue (4): 47306-047306.doi: 10.1088/1674-1056/adb25f

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Phase transition extracted by principal component analysis in the disordered Moore-Read state

Na Jiang(江娜)1,2,†, Shuaixin Fu(付帅鑫)1, Zhengzhi Ma(马正直)1, and Lian Wang(王莲)1   

  1. 1 School of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing 400074, China;
    2 Southwest Center for Theoretical Physics, Chongqing University, Chongqing 401331, China
  • 收稿日期:2024-10-21 修回日期:2025-01-18 接受日期:2025-02-05 出版日期:2025-04-15 发布日期:2025-04-15
  • 通讯作者: Na Jiang E-mail:990202000072@cqjtu.edu.cn
  • 基金资助:
    This work was supported by the National Natural Science Foundation of China (Grant Nos. 12104075 and 12347101).

Phase transition extracted by principal component analysis in the disordered Moore-Read state

Na Jiang(江娜)1,2,†, Shuaixin Fu(付帅鑫)1, Zhengzhi Ma(马正直)1, and Lian Wang(王莲)1   

  1. 1 School of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing 400074, China;
    2 Southwest Center for Theoretical Physics, Chongqing University, Chongqing 401331, China
  • Received:2024-10-21 Revised:2025-01-18 Accepted:2025-02-05 Online:2025-04-15 Published:2025-04-15
  • Contact: Na Jiang E-mail:990202000072@cqjtu.edu.cn
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (Grant Nos. 12104075 and 12347101).

摘要: We study the influence of disorder on the Moore-Read state by principal component analysis (PCA), which is one of the ground state candidates for the 5/2 fractional Hall state. By using PCA, the topological features of the ground state wave functions with different disorder strengths can be distilled. As the disorder strength increases, the Moore-Read state will be destroyed. We explore the phase transition by analyzing the overlaps between the random sample wave functions and the topologically distilled state. The cross-point between the amplitudes of the principal component and its counterpart is the phase transition point. Additionally, the origin of the second component comes from the excited states, which is different from the Laughlin state.

关键词: fractional quantum Hall, phase transition, principal component analysis

Abstract: We study the influence of disorder on the Moore-Read state by principal component analysis (PCA), which is one of the ground state candidates for the 5/2 fractional Hall state. By using PCA, the topological features of the ground state wave functions with different disorder strengths can be distilled. As the disorder strength increases, the Moore-Read state will be destroyed. We explore the phase transition by analyzing the overlaps between the random sample wave functions and the topologically distilled state. The cross-point between the amplitudes of the principal component and its counterpart is the phase transition point. Additionally, the origin of the second component comes from the excited states, which is different from the Laughlin state.

Key words: fractional quantum Hall, phase transition, principal component analysis

中图分类号:  (Quantum phase transitions)

  • 73.43.Nq
64.70.Tg (Quantum phase transitions) 05.30.Rt (Quantum phase transitions)