标题： 具有扩展范围密度-密度相互作用的受挫玻色子梯子 显示英文标题

标题： Frustrated Bose ladder with extended range density-density interaction

摘要： 当双链梯子上的硬核玻色子受到环交换相互作用的挫败时，难以捉摸的d波玻色液体（DBL）可以被稳定下来，这是相关金属的玻色子类似物。 在这里，我们分析了扩展Hubbard相互作用对DBL相的影响。 令人惊讶的是，这些相互作用被发现有利于这种奇异的玻色液体。 这一观察结果对于那些由于扩展范围的密度-密度相互作用而发生非局域交换过程的物理系统具有直接的相关性。 我们的观察结果也有助于在人工维度梯子中实现DBL物理学，在人工维度梯子中， onsite相互作用转化为沿人工横档的非局域相互作用。 在此背景下，我们还考虑了极端极限情况，其中局部硬核约束被提升为有效的横档阻塞。 除了由于扩展范围的密度-密度相互作用增强了DBL物理学外，我们还发现了超流体和DBL区域之间有趣中间相的迹象。 这个相，标记为密度调制s波配对（DMSP）相，结合了密度波和s波配对的特性。 我们的结果通过强调密度-密度相互作用和横档阻塞的影响，为受挫玻色子的物理学提供了新的见解。 显示英文摘要

摘要： When hard-core bosons on a two-leg ladder get frustrated by ring exchange interactions, the elusive d-wave Bose liquid (DBL) can be stabilized, a bosonic analog of a correlated metal. Here, we analyze the effect of extended Hubbard interactions on the DBL phase. Strikingly, these interactions are found to act in favor of the exotic Bose liquid. This observation is of immediate relevance for physical systems in which non-local exchange processes occur as a consequence of extended-range density-density interactions. Our observation also helps to achieve DBL physics in a synthetic-dimension ladder, where on-site interactions translate into non-local interactions along a synthetic rung. In this context, we also consider the extreme limit, in which the local hardcore constraint is elevated to an effective rung blockade. In addition to the enhancement of DBL physics due to extended-range density-density interactions, we also find signatures of an interesting intermediate phase between the superfluid and the DBL regime. This phase, labeled as the density modulated s-wave paired (DMSP) phase, combines features of density wave and s-wave pairing. Our results offer new insights into the physics of frustrated bosons by highlighting the influence of density-density interaction and rung-blockade.