Investigating finite-temperature effects on quantum phases is key to their experimental realization. Finite temperature and the interplay between quantum and thermal fluctuations can undermine properties and/or key features of quantum systems, but they can also bring about interesting phenomena. In this paper we present a comprehensive investigation of the finite-temperature phase diagram of two-dimensional lattice dipolar bosons coupled to a high-finesse optical cavity. Interestingly, we observe that checkerboard density-density correlations are enhanced at finite temperature. Indeed, we found that finite temperature drives a superfluid ground state into a normal state, which will then develop checkerboard order at higher temperatures. We show that this effect is solely due to the cavity-mediated interactions. We also confirm that the supersolid checkerboard phase survives for a wide range of filling factors up to a temperature scale of the order of half hopping amplitude, while the checkerboard diagonal order can survive up to temperatures of a few hopping amplitudes.

中文翻译：

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耦合到高精细腔体的晶格偶极玻色子的热结晶

研究量子相的有限温度效应是其实验实现的关键。有限温度以及量子和热涨落之间的相互作用可能会破坏量子系统的特性和/或关键特征，但它们也可能带来有趣的现象。在本文中，我们对耦合到高精细光学腔的二维晶格偶极玻色子的有限温度相图进行了全面研究。有趣的是，我们观察到棋盘密度-密度相关性在有限温度下增强。事实上，我们发现有限的温度驱动超流体基态进入正常状态，然后在更高的温度下形成棋盘顺序。我们证明这种效应完全是由于空腔介导的相互作用造成的。我们还证实，超固体棋盘相可以在各种填充因子下生存，最高可达半跳变幅度的温度范围，而棋盘对角线顺序可以在几个跳变幅度的温度下生存。