2013/03/08 by I. V. Tokatly
Physics and Astronomy · #Classical electromagnetism #Density functional theory #Electron #Function (biology) #Orbital-free density functional theory #Photon #Physics #Quantum #Quantum and electron transport phenomena #Quantum electrodynamics #Quantum mechanics #Spectroscopy and Quantum Chemical Studies #Strong Light-Matter Interactions #Time-dependent density functional theory #Wave function #cond-mat.mes-hall #quant-ph
paper · pdf · doi:10.1103/physrevlett.110.233001
published as Phys. Rev. Lett. 110, 233001 (2013) · 4+ pages
arxiv created 2013/03/08 · openalex publication_date 2013/06/04 · arxiv updated 2013/12/10 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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.