标题： 受色噪声驱动的量子相变的临界指数 显示英文标题

标题： Critical exponent of quantum phase transitions driven by colored noise

摘要： 我们证明了驱动耗散系统中的临界行为受到库储备谱性质的强烈影响。 我们研究了Dicke模型的开放系统实现，其中一种玻色腔模式与由原子玻色-爱因斯坦凝聚体的两个运动模式组成的大型自旋耦合。 腔模式被高强度激光驱动，并衰减到马尔可夫浴中，而原子模式与有色储库相互作用。 我们计算了超辐射相变的临界指数，并确定了它与有色浴低频谱密度函数之间固有的关系。 我们表明，有色储库的有限温度不会在本质上改变这种对谱密度函数的依赖性。 显示英文摘要

摘要： We demonstrate that criticality in a driven-dissipative sytem is strongly influenced by the spectral properties of the reservoir. We study the open-system realization of the Dicke model, where a bosonic cavity mode couples to a large spin formed by two motional modes of an atomic Bose-Einstein condensate. The cavity mode is driven by a high frequency laser and it decays to a Markovian bath, while the atomic mode interacts with a colored reservoir. We calculate the critical exponent of the superradiant phase transition and identify an inherent relation to the low-frequency spectral density function of the colored bath. We show that a finite temperature of the coloured reservoir does not qualitatively modify this dependence on the spectral density function.