北京大学学报(自然科学版)

球面分数霍尔效应的纠缠研究

刘雪乐,李定平   

  1. 北京大学物理学院,北京100871;
  • 收稿日期:2007-04-09 出版日期:2008-01-20 发布日期:2008-01-20

Entanglement Properties of the Fractional QuantumHall Effect on the Sphere

LIU Xuele, LI Dingping    

  1. School of Physics, Peking University, Beijing 100871;
  • Received:2007-04-09 Online:2008-01-20 Published:2008-01-20

摘要: 纠缠的冯纽曼熵测量被用于研究球分数霍尔效应。数值计算表明,球分数霍尔效应为最大纠缠态。当系统中粒子数较多时,纠缠度的值(E)可用霍尔效应的填充因子(ν)表示:E~log21ν。

关键词: 纠缠, 分数霍尔效应, 冯纽曼熵, 最大纠缠态

Abstract: The von Neumann entropy measure of entanglement is used to study the fractional quantum Hall effect on the sphere. Numerical results show that the FQHE on the sphere is a maximal entanglement state. While the number of particles in the system is big, the value of the entanglement (E) can be written as the function of the filling factor (ν):E~log21ν.

Key words: entanglement, fractional quantum Hall effect(FQHE), von Neumann entropy, maximal entanglement state(ME state)

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