标题： 过冷水中增强的格鲁奈森参数 显示英文标题

标题： Enhanced Grüneisen Parameter in Supercooled Water

摘要： 我们使用最近提出的\emph{可压缩单元}自旋类似模型 [Phys. Rev. Lett.\textbf{120}, 120603 (2018)] 来估计热膨胀系数与比热之间的比值（格鲁纳森参数$\Gamma$）在过冷水中。在临界压力和温度附近，$\Gamma$增加。$\Gamma$值在压力诱导的有限$T$临界终点 [Phys. Rev. Lett.\textbf{104}, 245701 (2010)] 和量子临界点 [Phys. Rev. Lett. \textbf{91}, 066404 (2003)], 这表明有两个能量尺度在控制该系统。 这种增强的行为来自 $\Gamma$ 是由于高密度和低密度液体的共存 [Science \textbf{358}, 1543 (2017)]。 我们的研究结果支持在无主之地区域过冷水中提出的液-液临界点，并表明该模型可能在其他系统中有应用。 显示英文摘要

摘要： We use the recently-proposed \emph{compressible cell} Ising-like model [Phys. Rev. Lett. \textbf{120}, 120603 (2018)] to estimate the ratio between thermal expansivity and specific heat (the Gr\"uneisen parameter $\Gamma$) in supercooled water. Near the critical pressure and temperature, $\Gamma$ increases. The $\Gamma$ value diverges near the pressure-induced finite-$T$ critical end-point [Phys. Rev. Lett. \textbf{104}, 245701 (2010)] and quantum critical points [Phys. Rev. Lett. \textbf{91}, 066404 (2003)], which indicates that two energy scales are governing the system. This enhanced behavior of $\Gamma$ is caused by the coexistence of high- and low-density liquids [Science \textbf{358}, 1543 (2017)]. Our findings support the proposed liquid-liquid critical point in supercooled water in the No-Man's Land regime, and indicates possible applications of this model to other systems.