论文标题
光腔中晶格的异常热力学
Anomalous thermodynamics of lattice Bose gases in optical cavities
论文作者
论文摘要
我们研究了Mott-Mundiculator极限中光腔中晶格bose气体的热力学特性。我们发现该系统假定异常的热力学行为，可以追溯到基本添加性通过其无限长范围的相互作用的破坏。具体而言，该系统显示了规范合奏与宏伟的规范之间的惊人集合不等式，在规范集合中的热力学相图的不同异常结构中急剧表现出来。特别是，在温度状态左右，该系统表现出负压缩性和异常的恢复相变，其中有序电荷密度波相在增加温度时从无序的同质相中恢复。在当前的实验中，可以实现对异常行为的直接实验观察，并具有良好控制的总颗粒数波动。
We investigate thermodynamic properties of lattice Bose gases in optical cavities in the Mott-insulator limit. We find the system assumes anomalous thermodynamic behavior that can be traced back to the breaking of fundamental additivity by its infinite-long range interaction. Specifically, the system shows striking ensemble inequivalence between the canonical ensemble and the grand canonical one, sharply manifesting in the distinct anomalous structure of the thermodynamic phase diagram in the canonical ensemble. In particular, in the temperature regime around half of the on-site energy, the system manifests negative compressibility and anomalous reentrant phase transitions where the ordered charge density wave phase revives from the disordered homogenous phase upon increasing the temperature. Direct experimental observation of the anomalous behavior can be realized in the current experiments with well-controlled total particle number fluctuations.
