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    题名: Entanglement entropy with localized and extended interface defects
    作者: 林瑜琤
    Iglói, Ferenc;Szatmári, Zsolt;Lin, Yu-Cheng
    贡献者: 應物所
    日期: 2009.06
    上传时间: 2014-04-10 11:15:52 (UTC+8)
    摘要: The quantum Ising chain of length, , which is separated into two parts by localized or extended defects is considered at the critical point where scaling of the interface magnetization is nonuniversal. We measure the entanglement entropy between the two halves of the system in equilibrium, as well as after a quench, when the interaction at the interface is changed for time . For the localized defect the increase in the entropy with or with involves the same effective central charge, which is a continuous function of the strength of the defect. On the contrary for the extended defect the equilibrium entropy is saturated but the nonequilibrium entropy has a logarithmic time dependence the prefactor of which depends on the strength of the defect.
    關聯: Physical Review B,80(2), 024405(1-9)
    資料來源: http://dx.doi.org/10.1103/PhysRevB.80.024405
    数据类型: article
    DOI 連結: http://dx.doi.org/10.1103/PhysRevB.80.024405
    DOI: 10.1103/PhysRevB.80.024405
    显示于类别:[應用物理研究所 ] 期刊論文

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