摘要翻译：
我们进行了量子蒙特卡罗模拟，研究了分割棋盘形固体畴的一维和二维界面的超流行为。系统用最近邻相互作用的硬核玻色-哈伯德哈密顿量描述。根据文献1我们发现：（一）界面在发生超流-绝缘体转变之前，在很大的相互作用强度范围内保持超流状态；(ii)在一维上，跃迁为Kosterlitz-Thousless型，并伴随着粗糙化跃迁，由电荷1/2准粒子的增殖驱动；(iii)在二维上，过渡属于3DU(1)通用类，界面保持平滑。量子反铁磁体中的畴壁也有类似的现象。
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英文标题：
《Superfluid-Insulator and Roughening Transitions in Domain Walls》
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作者：
\c{S}. G. S\"oyler, B. Capogrosso-Sansone, N. V. Prokof'ev, B. V.
  Svistunov
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最新提交年份：
2007
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分类信息：

一级分类：Physics        物理学
二级分类：Other Condensed Matter        其他凝聚态物质
分类描述：Work in condensed matter that does not fit into the other cond-mat classifications
在不适合其他cond-mat分类的凝聚态物质中工作
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一级分类：Physics        物理学
二级分类：Statistical Mechanics        统计力学
分类描述：Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变，热力学，场论，非平衡现象，重整化群和标度，可积模型，湍流
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英文摘要：
  We have performed quantum Monte Carlo simulations to investigate the superfluid behavior of one- and two-dimensional interfaces separating checkerboard solid domains. The system is described by the hard-core Bose-Hubbard Hamiltonian with nearest-neighbor interaction. In accordance with Ref.1, we find that (i) the interface remains superfluid in a wide range of interaction strength before it undergoes a superfluid-insulator transition; (ii) in one dimension, the transition is of the Kosterlitz-Thouless type and is accompanied by the roughening transition, driven by proliferation of charge 1/2 quasiparticles; (iii) in two dimensions, the transition belongs to the 3D U(1) universality class and the interface remains smooth. Similar phenomena are expected for domain walls in quantum antiferromagnets.
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PDF链接：
https://arxiv.org/pdf/707.393