具有长程相互作用的超攀位错相
Phases of superclimbing dislocation with long-range interaction between jogs
摘要：
在固态氦-4中，超流通道的主要候选者是伯格斯矢量沿hcp对称轴的位错。在这里，我们专注于一个通用的刃型位错，可以执行superclimb-climb支持的超流沿其核心的量子行为。通过蒙特卡罗模拟，讨论了啮合部之间的长程弹性相互作用的作用。据发现，这样的相互作用不改变定性的相图发现不占这样的力量。他们的主要效果包括重新正规化的有效规模确定的可压缩性的位错在Tomonaga-Luttinger液相。在一维非对角长程序的高斯近似下，可以很好地描述位错的量子粗糙相，其超流序参量沿核方向的分布。
英文摘要：
The main candidate for the superfluid pathways in solid Helium-4 are dislocations with Burgers vector along the hcp symmetry axis. Here we focus on quantum behavior of a generic edge dislocation which can perform superclimb -- climb supported by the superflow along its core. The role of the long range elastic interactions between jogs is addressed by Monte Carlo simulations. It is found that such interactions do not change qualitatively the phase diagram found without accounting for such forces. Their main effect consists of renormalizing the effective scale determining compressibility of the dislocation in the Tomonaga-Luttinger Liquid phase. It is also found that the quantum rough phase of the dislocation can be well described within the gaussian approximation which features off-diagonal long range order in 1D for the superfluid order parameter along the core.
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