Non-Equilibrium Dynamics and Charge Transport in Quantum Impurity Systems

有限的充电能量导致的多体相关控制了量子杂质系统的实时动力学和稳态。本项目的重点是将散射数值重整化群方法应用于上一期资助期间开发的磁输运和自旋电子学。特别是，我们将把我们的方法扩展到更复杂的纳米器件，如纳米桥。通过与微扰和守恒Keldysh方法的比较，结果将对小相互作用强度进行基准测试。我们将寻求将依赖时间的NRG扩展到由外部脉冲和任意依赖时间的哈密顿驱动的强相互作用量子系统的想法。

Many-body correlations caused by the finite charging energy dominate the real-time dynamics and the steady-state of quantum-impurity systems out of equilibrium. The central focus of this project will be the application of scattering numerical renormalization group method to magneto-transport and spintronics which was developed during the previous funding period. In particular we will extend our method to more complex nano-devices such as nano-bridges. The results will be benchmarked for small interaction strength by comparison with perturbative and conserving Keldysh approaches. We will pursue ideas to extent the time-dependent NRG to strongly interacting quantum systems driven by external pulses and arbitrary time-dependent Hamiltonians.