Time-dependent density functional theory for many-electron systems interacting with cavity photons.
Time-dependent density functional theory for many-electron systems interacting with cavity photons.
复制标题
多电子系统与腔光子相互作用的时间相关密度泛函理论。
DOI：
10.1103/physrevlett.110.233001
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发表时间：
2013
影响因子：
8.6
通讯作者：
I. Tokatly
中科院分区：
文献类型：
--
作者：
I. Tokatly
提出了与微腔量子化电磁模式强耦合的多电子系统的时变（电流）密度泛函理论。结果表明，电子-光子波函数是电子（电流）密度和光子坐标期望值的唯一函数。建立了Kohn-Sham系统，通过求解非相互作用粒子的自洽方程来计算上述基本变量。我们提出了交换相关势的可能近似，并讨论了这种方法对开放量子系统理论的影响。特别地，我们证明了它自然地导致与Caldeira-Leggett浴耦合的系统的随时间密度泛函理论。
Time-dependent (current) density functional theory for many-electron systems strongly coupled to quantized electromagnetic modes of a microcavity is proposed. It is shown that the electron-photon wave function is a unique functional of the electronic (current) density and the expectation values of photonic coordinates. The Kohn-Sham system is constructed, which allows us to calculate the above basic variables by solving self-consistent equations for noninteracting particles. We suggest possible approximations for the exchange-correlation potentials and discuss implications of this approach for the theory of open quantum systems. In particular we show that it naturally leads to time-dependent density functional theory for systems coupled to the Caldeira-Leggett bath.