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Universal entanglement spectra in critical spin chains

机译:关键自旋链中的通用纠缠谱

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摘要

We advocate that in critical spin chains, and possibly in a larger class of one-dimensional critical models, a gap in the momentum-space entanglement spectrum separates the universal part of the spectrum, which is determined by the associated conformal field theory, from the nonuniversal part, which is specific to the model. To this end, we provide affirmative evidence from multicritical spin chains with low-energy sectors described by the SU(2)_2 or the SU(3)_1 Wess-Zumino-Witten model.
机译:我们主张,在临界自旋链中,可能在更大的一维临界模型中,动量-空间纠缠谱中的间隙将谱的通用部分(由相关的共形场理论确定)与非通用部分,特定于模型。为此,我们提供了由SU(2)_2或SU(3)_1 Wess-Zumino-Witten模型描述的具有低能量扇区的多临界自旋链的肯定证据。

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  • 来源
    《Physical review》 |2016年第8期|081112.1-081112.6|共6页
  • 作者单位

    Department of Physics, The University of Texas at Austin, Austin, Texas 78712, USA;

    Department of Physics, The University of Texas at Austin, Austin, Texas 78712, USA;

    Department of Physics, The University of Texas at Austin, Austin, Texas 78712, USA;

    Department of Physics, Princeton University, Princeton, New Jersey 08544, USA,Laboratoire Pierre Aigrain, Ecole Normale Superieure-PSL Research University, Centre National de la Recherche Scientifique, Universite Pierre et Marie Curie-Sorbonne Universites, Universite Paris Diderot-Sorbonne Paris Cite, 24 rue Lhomond, 75231 Paris Cedex 05, France;

    Department of Physics, The University of Texas at Austin, Austin, Texas 78712, USA;

    Institute for Theoretical Physics, University of Wuerzburg, D-97074 Wuerzburg, Germany;

    Institute for Theoretical Physics, University of Wuerzburg, D-97074 Wuerzburg, Germany;

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