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Attack-induced entanglement of noninteracting Fermi gas
Ren Jie ,Zhu Shiqun *
School of Physical Science and Technology, Suzhou University
*Correspondence author
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Funding: 教育部博士点基金（No.20050285002）
Opened online:19 September 2008
Accepted by: none
Citation: Ren Jie ,Zhu Shiqun .Attack-induced entanglement of noninteracting Fermi gas[OL]. [19 September 2008] http://en.paper.edu.cn/en_releasepaper/content/24177
 
 
The bipartite entanglement in Fermi gas without interaction is investigated when there are three fermions in the system. The negativity and the von Neumann entropy are employed to measure the entanglement of the system. The position of the third fermion can affect the entanglement between the first and the second fermions. The entanglement can be enhanced or suppressed when the third fermion changes its position. When the two fermions are at the same position or when their distance is more than 2.0/k_F, the third fermion can not affect them.
Keywords:Fermi gas;entanglement;entropy
 
 
 

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