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Synchronization transition in the double dimer model on the cubic lattice

机译:立方格晶格上双二聚体模型中的同步转换

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摘要

We study the classical cubic-lattice double dimer model, consisting of two coupled replicas of the close-packed dimer model, using a combination of theoretical arguments and Monte Carlo simulations. Our results establish the presence of a "synchronization transition" at a critical value of the coupling, where both replicas remain disordered but their fluctuations become strongly correlated. We show that this unconventional transition, which has neither external nor spontaneous symmetry breaking, is continuous and belongs to the three-dimensional inverted-XY universality class. By adding aligning interactions for dimers within each replica, we map out the full phase diagram, including the interplay between columnar ordering and synchronization. We also solve the coupled double dimer model exactly on the Bethe lattice and show that it correctly reproduces the qualitative phase structure but with mean-field critical behavior.
机译:我们研究了古典立方格二级二聚体模型,由近距离填充二聚体模型的两个耦合复制品组成,使用理论参数和蒙特卡罗模拟的组合。我们的结果在耦合的临界值中建立了“同步转变”的存在,其中两个复制品保持无序,但它们的波动变得强烈相关。我们表明,这种非常规转换既不是外部也不是自发对称的破裂,是连续的,属于三维倒XY普遍性课程。通过在每个副本中添加对齐相互作用,我们将映射完整相图,包括柱状排序与同步之间的相互作用。我们还可以在贝特格子上完全解决耦合的双倍二聚体模型,并表明它正确再现定性相结构,而是具有平均临界行为。

著录项

  • 来源
    《Physical review》 |2019年第14期|144403.1-144403.15|共15页
  • 作者

    Wilkins Neil; Powell Stephen;

  • 作者单位

    Univ Nottingham Sch Phys & Astron Nottingham NG7 2RD England;

    Univ Nottingham Sch Phys & Astron Nottingham NG7 2RD England;

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  • 正文语种 eng
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