论文标题
相关金属中的光诱导的细息肉现象
Photoinduced prethermalization phenomena in correlated metals
论文作者
论文摘要
我们研究了有限持续时间的电场泵脉冲后，弱相互作用的哈伯德系统中的细能层现象。我们将Hubbard相互作用处理到二阶，将预素化范式应用于时间依赖性相互作用方案，以及超出线性阶的电场强度。对于吸收的能量以及单个细化的动量职业数量，观察到具有脉冲持续时间的缩放行为，我们将其归因于相互作用和电场中的主要二次序列。我们表明，可以使用合适的共振频率的泵脉冲创建明显的非热动量分布，并讨论如何将它们与热状态区分开。
We study prethermalization phenomena in weakly interacting Hubbard systems after electric-field pump pulses with finite duration. We treat the Hubbard interaction up to second order, applying the prethermalization paradigm for time-dependent interaction protocols, and the electric field strength beyond linear order. A scaling behavior with pulse duration is observed for the absorbed energy as well as individual prethermalized momentum occupation numbers, which we attribute to the leading quadratic orders in interaction and electric field. We show that a pronounced non-thermal momentum distribution can be created with pump pulses of suitable resonance frequencies, and discuss how to distinguish them from thermal states.
