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Ising anyonic topological phase of interacting fermions in one dimension

机译:一维相互作用费米子的Ising非调子拓扑相

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摘要

We study a microscopic model of interacting fermions in a ladder setup, where the total number of particles is conserved. At a special point, the ground state is known and gives rise to a topological state of matter with edge modes obeying the statistics of Ising anyons. Using a combination of bosonization as well as full scale numerical density-matrix renormalization group analysis, we map out the full phase diagram. We find that the topological phase survives in an extended parameter regime. Remarkably, an additional symmetry is required to protect the topological phase.
机译:我们研究了梯形结构中相互作用的费米子的微观模型,其中粒子的总数得以保留。在一个特殊的点上,基态是已知的,它会引起物质的拓扑状态,其边缘模式服从Ising anyon的统计。通过结合玻色化以及全面的数值密度矩阵重归一化组分析,我们可以绘制出完整的相图。我们发现,拓扑阶段在扩展的参数范围内得以生存。明显地,需要额外的对称性来保护拓扑阶段。

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  • 来源
    《Physical review》 |2017年第12期|121109.1-121109.6|共6页
  • 作者单位

    Institute for Theoretical Physics III and Center for Integrated Quantum Science and Technology, University of Stuttgart, Pfaffenwaldring 57, 70550 Stuttgart, Germany;

    Institute for Theoretical Physics III and Center for Integrated Quantum Science and Technology, University of Stuttgart, Pfaffenwaldring 57, 70550 Stuttgart, Germany;

    Institute for Theoretical Physics III and Center for Integrated Quantum Science and Technology, University of Stuttgart, Pfaffenwaldring 57, 70550 Stuttgart, Germany;

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