论文标题
部分可观测时空混沌系统的无模型预测
Generalized Higgs mechanism in long-range interacting quantum systems
论文作者
论文摘要
远程相互作用的量子系统的物理学目前是通过量子模拟器快速进步驱动的文艺复兴时期生活的。在这些系统中，许多统计物理的范式不适用，并且通用长波长物理学也会通过长期力的存在而实质性地改变。在这里，我们探讨了几种长距离相互作用的量子系统的低能激发，包括自旋模型和相互作用的bose气体，这与与U（1）和SU（1）和SU（2）对称性的自发断裂相关的有序相。取决于相互作用的范围，我们发现了三种定性不同的制度，而不是预期的金石模式。在这些方案之一中，金石模式通过希格斯机制的概括而覆盖。此外，我们展示了在光腔中使用超低原子气体的当前实验中实现这种效果。
The physics of long-range interacting quantum systems is currently living through a renaissance driven by the fast progress in quantum simulators. In these systems many paradigms of statistical physics do not apply and also the universal long-wavelength physics gets substantially modified by the presence of long-ranged forces. Here we explore the low-energy excitations of several long-range interacting quantum systems, including spin models and interacting Bose gases, in the ordered phase associated with the spontaneous breaking of U(1) and SU(2) symmetries. Instead of the expected Goldstone modes, we find three qualitatively different regimes, depending on the range of the interaction. In one of these regimes the Goldstone modes are gapped, via a generalization of the Higgs mechanism. Moreover, we show how this effect is realized in current experiments with ultracold atomic gases in optical cavities.
