一维三体相互作用
Three-body Interactions in one Dimension
摘要：
本文用解析方法和广泛的量子蒙特卡罗模拟确定了一维硬核格点玻色子通过排斥三体相互作用系统的相图。这种三体相互作用可以从捕获在光晶格中的极性分子的微观理论推导出来。根据相互作用的强度和粒子密度，我们发现超流和固相，后者出现在一个非常规的填充的晶格和显示的电荷密度波和键序共存。
英文摘要：
We determine the phase-diagram of a one-dimensional system of hard-core lattice bosons interacting via repulsive three-body interactions by analytic methods and extensive quantum Monte-Carlo simulations. Such three-body interactions can be derived from a microscopic theory for polar molecules trapped in an optical lattice. Depending on the strength of the interactions and the particle density, we find superfluid and solid phases, the latter appearing at an unconventional filling of the lattice and displaying a coexistence of charge-density-wave and bond orders.
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