论文标题
非平衡两粒子自洽的方法
Nonequilibrium Two-Particle Self-Consistent Approach
论文作者
论文摘要
我们介绍了两粒子自一致（TPSC）方法的非平衡实现，该方法已证明在弱和中间相关方面提供了相互作用晶格系统的可靠平衡描述。该方法捕获了二维和高维系统中局部和非局部相关性的影响，并满足了Mermin-Wagner定理。我们通过计算时间依赖性的自旋和电荷响应函数的计算以及从不同相关函数中提取的有效温度的演变来证明非平衡TPSC的多功能性，在二维Hubbard模型中相互作用坡道后。
We present the nonequilibrium implementation of the two-particle self-consistent (TPSC) approach, which has been shown to provide a reliable equilibrium description of interacting lattice systems in the weak- and intermediate-correlation regime. This method captures the effects of local and nonlocal correlations in two- and higher-dimensional systems and satisfies the Mermin-Wagner theorem. We demonstrate the versatility of nonequilibrium TPSC with calculations of the time-dependent spin and charge response functions and the evolution of effective temperatures extracted from different correlation functions, after interaction ramps in the two-dimensional Hubbard model.
