论文标题
评论“ Berezinskii-Kosterlitz-二维偶极条纹中的无尽过渡”
Comment on "Berezinskii-Kosterlitz-Thouless transition in two-dimensional dipolar stripes"
论文作者
论文摘要
在最近的一篇文章中[R. Bombin，F。Mazzanti和J. Boronat，物理。 Rev. A100, 063614 (2019)], it is contended that a two-dimensional system of dipolar bosons, with dipole moments aligned at particular angles with respect to the direction perpendicular to the plane of motion, featuring a "striped" crystalline ground state, in turn undergoes a Berezinskii-Kosterlitz-Thouless superfluid transition at low temperature, making it a二维超酚。我们在这里表明，通过量子蒙特卡洛模拟获得的结果，实际上并不支持这样的结论。相反，它们与我们的工作中所阐述的相一致[J.低温。物理。 196，413（2019）]，即条纹基态正在绝缘（即，在常规意义上是非散发性），本质上是像准二维，平行独立链的系统一样。我们归因于Bombin等人得出的结论的错误。对于它们的模拟系统的尺寸很小，这些系统不允许可靠地外推到热力学极限。
In a recent article [R. Bombin, F. Mazzanti and J. Boronat, Phys. Rev. A100, 063614 (2019)], it is contended that a two-dimensional system of dipolar bosons, with dipole moments aligned at particular angles with respect to the direction perpendicular to the plane of motion, featuring a "striped" crystalline ground state, in turn undergoes a Berezinskii-Kosterlitz-Thouless superfluid transition at low temperature, making it a two-dimensional supersolid. We show here that the results provided therein, obtained by means of Quantum Monte Carlo simulations, do not actually support such a conclusion. Rather, they are consistent with that expounded in our work [J. Low Temp. Phys. 196, 413 (2019)], namely that the striped ground state is insulating (i.e., non-superfluid in the conventional sense), essentially behaving like a system of quasi-one-dimensional, parallel independent chains. We attribute the incorrectness of the conclusion reached by Bombin et al. to the very small sizes of their simulated system, which do not allow for a reliable extrapolation to the thermodynamic limit.
