论文标题
探索物质的螺旋阶段
Exploring helical phases of matter in bosonic ladders
论文作者
论文摘要
Ultracold Atoms的梯子模型为与人造仪表场和相互作用之间的相互作用相关的不同现象和物质的实验和理论研究提供了多功能平台。已知与粒子和磁通密度的特定比率相关的螺旋状态很强，通常可以将其解释为分数量子霍尔状态的一维极限，因此称为自立学。然而，由于这些状态表征的较小差距，他们的签名通常很难观察。在这里，我们研究了填充因子1处的骨阶梯模型。基于琼脂化，重新归一化组和矩阵乘积仿真，我们确定了在这种共振下出现的两个强相关的螺旋相。我们表明，其中一个可以在具有两个物种硬核玻色子和现场排斥的系统中访问，因此可以适合光学晶格实验。它的签名在现实的系统大小的广泛参数中是相当大的稳定性。
Ladder models of ultracold atoms offer a versatile platform for the experimental and theoretical study of different phenomena and phases of matter linked to the interplay between artificial gauge fields and interactions. Strongly correlated helical states are known to appear for specific ratios of the particle and magnetic flux densities and they can often be interpreted as a one-dimensional limit of fractional quantum Hall states, thus being called pretopological. Their signatures, however, are typically hard to observe due to the small gaps characterizing these states. Here we investigate bosonic ladder models at filling factor 1. Based on bosonization, renormalization group and matrix product state simulations we pinpoint two strongly correlated helical phases appearing at this resonance. We show that one of them can be accessed in systems with two-species hardcore bosons and on-site repulsions only, thus amenable for optical lattice experiments. Its signatures are sizable and stable over a broad range of parameters for realistic system sizes.
