幂律-指数相互作用诱导的量子螺旋相位

Guoqing Tian, Ying Wu, Xin-You Lü
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引用次数: 0

摘要

我们从理论上预测了一维波导 QED 系统中量子发射器之间的一种幂律-指数(PLE)偶极子-偶极子相互作用。这种非常规的长程相互作用是幂律增长耦合和指数衰减耦合的结合。将 PLE 相互作用应用于自旋模型,我们发现了丰富的多体相。最值得注意的是,我们发现 PLE 相互作用可以诱发有序的临界螺旋相。这些螺旋相产生于 PLE 相互作用的幂律因子产生的强挫折;因此,其他类型的长程相互作用,如纯指数和幂律衰变相互作用,都不存在这些螺旋相。我们的工作也适用于高维系统。它从根本上拓宽了多体物理学的领域,在强相关物质的量子模拟中有着重要应用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Power-law-exponential interaction induced quantum spiral phases

Power-law-exponential interaction induced quantum spiral phases
We theoretically predict a kind of power-law-exponential (PLE) dipole-dipole interaction between quantum emitters in a 1D waveguide QED system. This unconventional long-range interaction is the combination of power-law growth and exponential decay couplings. Applying the PLE interaction to a spin model, we uncover the rich many-body phases. Most remarkably, we find that the PLE interaction can induce the ordered and critical spiral phases. These spiral phases emerge from the strong frustration generated by the power-law factor of the PLE interaction; hence they are absent for other types of long-range interaction, e.g., pure exponential and power-law decay interactions. Our work is also applicable for the higher-dimensional systems. It fundamentally broadens the realm of many-body physics and has significant applications in quantum simulation of strongly correlated matter.
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