Tokatly I V
Nano-bio Spectroscopy group and ETSF Scientific Development Centre, Departamento de Física de Materiales, Universidad del País Vasco UPV/EHU, E-20018 San Sebastían, Spain and IKERBASQUE, Basque Foundation for Science, 48011 Bilbao, Spain.
Phys Rev Lett. 2013 Jun 7;110(23):233001. doi: 10.1103/PhysRevLett.110.233001. Epub 2013 Jun 4.
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.
提出了用于与微腔的量子化电磁模式强耦合的多电子系统的含时（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泛函。构建了Kohn - Sham体系，这使我们能够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。我们提出了交换关联势的可能近似，并讨论了该方法对开放量子系统理论的影响。特别是我们表明，它自然地导致了与Caldeira - Leggett热库耦合的系统的含时密度泛函理论。
