论文标题
具有硬柔软的电晕互动的玻色粒系统中的超条纹和准晶体
Superstripes and quasicrystals in bosonic systems with hard-soft corona interactions
论文作者
论文摘要
在具有真正的量子特性的平衡阶段寻找自发的模式形成是当前研究的主要方向。在这项工作中，我们研究了量子波动的效果 - 零点运动和交换相互作用 - 与各向同性硬柔软的Corona相互作用的骨体颗粒集合的相位。我们执行广泛的路径综合卡洛模拟，以确定其基态特性。通过颗粒的密度和软核能电位的相互作用强度参数的丰富相图揭示了在低密度状态下的超胚膜，kagome和三角形晶体。在高密度极限中，我们观察到具有与准晶相的周期性近似值兼容12倍旋转对称性的模式。我们通过计算超流体密度和键 - 取向阶阶参数来表征这些量子相。最后，我们强调了我们发现的定性和定量差异，其与经典的平衡阶段有关相同的参数制度。
The search for spontaneous pattern formation in equilibrium phases with genuine quantum properties is a leading direction of current research. In this work we investigate the effect of quantum fluctuations - zero point motion and exchange interactions - on the phases of an ensemble of bosonic particles with isotropic hard-soft corona interactions. We perform extensive path-integral Monte Carlo simulations to determine their ground state properties. A rich phase diagram, parametrized by the density of particles and the interaction strength of the soft-corona potential, reveals supersolid stripes, kagome and triangular crystals in the low-density regime. In the high-density limit we observe patterns with 12-fold rotational symmetry compatible with periodic approximants of quasicrystalline phases. We characterize these quantum phases by computing the superfluid density and the bond-orientational order parameter. Finally, we highlight the qualitative and quantitative differences of our findings with the classical equilibrium phases for the same parameter regimes.
