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- Fujinaga Masashi
- Department of Physics, University of Tokyo
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- Hatano Naomichi
- Institute of Industrial Science, University of Tokyo
書誌事項
- タイトル別名
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- The Entanglement of the <I>XY</I> Spin Chain in a Random Magnetic Field
- The Entanglement of the<i>X</i><i>Y</i>Spin Chain in a Random Magnetic Field
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抄録
We investigate the entanglement of the ferromagnetic XY model in a random magnetic field at zero temperature and in the uniform magnetic field at finite temperatures. We use the concurrence to quantify the entanglement. We find that, in the ferromagnetic region of the uniform magnetic field h, all the concurrences are generated by the random magnetic field and by the thermal fluctuation. In one particular region of h, the next-nearest neighbor concurrence is generated by the random field but not at finite temperatures. We also find that the qualitative behavior of the maximum point of the entanglement in the random magnetic field depends on whether the variance of its distribution function is finite or not.
収録刊行物
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- Journal of the Physical Society of Japan
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Journal of the Physical Society of Japan 76 (9), 094001-094001, 2007
一般社団法人 日本物理学会
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キーワード
詳細情報 詳細情報について
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- CRID
- 1390001204196527872
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- NII論文ID
- 130005296946
- 110006418595
- 210000106870
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- NII書誌ID
- AA00704814
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- ISSN
- 13474073
- 00319015
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- NDL書誌ID
- 8907106
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可