Ground State Entanglement in Spin Systems
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概要
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We study the entanglement between arbitrary two spins in the XY and the antiferromagnetic Heisenberg spin chains in a uniform magnetic field. The entanglement of pairwise qubits in these models is obtained as a function of magnetic field by exact and numerical calculations. We find that the behavior of entanglement in the isotropic XY model is qualitatively the same as that in the Heisenberg model. Properties of entanglement length are also discussed.
- 理論物理学刊行会の論文
- 2005-04-30
著者
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NISHIMORI Hidetoshi
Department of Physics,Tokyo Institute of Technology
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Yano Hironori
Department Of Physics Tokyo Institute Of Technology
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Nishimori Hidetoshi
Department Of Physics Facuilty Of Science Tokyo Institute Of Technology
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