标题： 电子-磁振子动力学由超短激光脉冲触发：实时双$GW$研究 显示英文标题

标题： Electron-magnon dynamics triggered by an ultrashort laser pulse: A real-time Dual $GW$ study

摘要： 超快辐照相关电子系统会引发涉及准粒子激发、双占据态、电荷载流子和自旋涨落的复杂动力学。 为了描述这些效应，我们开发了一种高效的非平衡方法，称为D-$GW$，该方法能够在动态平均场理论（DMFT）中自洽地处理局部关联，并在图解框架内同时考虑空间电荷和自旋涨落。 该方法在实时域中进行表述，并能直接获取单粒子和两粒子动量和能量依赖的响应函数，而无需进行解析延拓，这在基于Matsubara频率的方法中是必需的。 我们将D-$GW$方法应用于研究光激发扩展的Hubbard模型的动力学，这是同时包含强电荷和自旋涨落的最小系统。 聚焦于接近莫特转变的挑战性参数区域，我们证明了关联金属和窄带隙莫特绝缘体经历了涉及单粒子和集体电子激发之间复杂能量转移的不同热化过程。 显示英文摘要

摘要： Ultrafast irradiation of correlated electronic systems triggers complex dynamics involving quasi-particle excitations, doublons, charge carriers, and spin fluctuations. To describe these effects, we develop an efficient non-equilibrium approach, dubbed D-$GW$, that enables a self-consistent treatment of local correlations within dynamical mean-field theory (DMFT) and spatial charge and spin fluctuations, that are accounted for simultaneously within a diagrammatic framework. The method is formulated in the real-time domain and provides direct access to single- and two-particle momentum- and energy-dependent response functions without the need for analytical continuation, which is required in Matsubara frequency-based approaches. We apply the D-$GW$ method to investigate the dynamics of a photo-excited extended Hubbard model, the minimal system that simultaneously hosts strong charge and spin fluctuations. Focusing on the challenging parameter regime near the Mott transition, we demonstrate that correlated metals and narrow-gap Mott insulators undergo distinct thermalization processes involving complex energy transfer between single-particle and collective electronic excitations.