Time-Dependent Gutzwiller Approximation: Theory and Applications
Time-Dependent Gutzwiller Approximation: Theory and Applications
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DOI：
10.1007/s10948-019-05406-z
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发表时间：
2020-01
影响因子：
1.8
通讯作者：
K. Noatschk;C. Martens;G. Seibold
中科院分区：
文献类型：
--
作者：
K. Noatschk;C. Martens;G. Seibold
在变分波函数的基础上重新导出了含时Gutzwiller近似，该变分波函数是斯莱特行列式与相干态的直积。后者可以与Kotliar和Ruckenstein的奴隶玻色子公式有关，我们的方法提供了一种方便的方法来推广理论，实现非平衡态和非平衡现象的研究。我们讨论的概念方面的应用程序中的线性响应限制和淬火反铁磁秩序，我们评估的光学电导率在非平衡的情况下。
The time-dependent Gutzwiller approximation is rederived on the basis of a variational wave function which is a direct product of a Slater determinant and a coherent state. The latter can be related to the slave-boson formulation by Kotliar and Ruckenstein, and our approach offers a convenient way to generalize the theory towards the implementation of symmetry-broken states and the study of non-equilibrium phenomena. We discuss the concept with regard to applications in the linear response limit and for quenched antiferromagnetic order for which we evaluate the optical conductivity in non-equilibrium situations.